CN215720981U - Normally open type electromagnetic valve structure without switching block - Google Patents
Normally open type electromagnetic valve structure without switching block Download PDFInfo
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- CN215720981U CN215720981U CN202122306026.7U CN202122306026U CN215720981U CN 215720981 U CN215720981 U CN 215720981U CN 202122306026 U CN202122306026 U CN 202122306026U CN 215720981 U CN215720981 U CN 215720981U
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Abstract
The utility model discloses a normally open type electromagnetic valve structure without a switching block, which comprises a valve body, a diaphragm spring, a valve cover, an auxiliary valve core outer spring, an auxiliary valve core group, a fixed iron core, a mandril, a movable iron core, a magnetism isolating pipe group and an electromagnetic coil. The normally open type electromagnetic valve structure directly processes a supporting surface for supporting the fixed iron core and the auxiliary valve core outer spring in the pilot valve cavity of the valve cover, the supporting surface is a plane, meanwhile, the magnetism isolating pipe group is directly connected with the valve cover, the lower end surface of the magnetism isolating pipe group tightly presses and fixes the fixed iron core, and a transfer block is not needed, so that the product cost is reduced, and the space occupied by the electromagnetic valve is reduced.
Description
Technical Field
The utility model relates to the technical field of electromagnetic valves, in particular to a normally open type electromagnetic valve structure, and more particularly relates to a normally open type electromagnetic valve structure without a switching block.
Background
In the field of electromagnetic valves, the structural types of two-position two-way electromagnetic valves are divided into direct-acting type, step-by-step direct-acting type and pilot type, and the working types are divided into normally-open type and normally-closed type. For a normally open design, a transition block (as shown in fig. 4) is usually used as a support surface for the fixed core and the outer spring of the secondary spool. The external thread at the lower end of the adapter block is in threaded connection and locking with the valve body or the valve cover. The lower end of the auxiliary valve core is inserted into an outer spring of the auxiliary valve core and is placed into a lower end hole of the fixed iron core together, the ejector rod is inserted into an upper end center hole of the fixed iron core, the movable iron core is arranged at the uppermost end of an inner hole of the magnetism isolating pipe group and is arranged into the magnetism isolating pipe group together, the lower end thread of the magnetism isolating pipe group is connected and locked with the inner thread at the upper end of the switching block, the fixed iron core is firmly pressed through the lower end face of the magnetism isolating pipe group, and the bottom surface of the outer spring of the auxiliary valve core is arranged on a supporting surface in a cavity of the switching block. When the power is off, the auxiliary valve core always keeps a certain distance between the sealing end face and the pilot valve port under the action of the auxiliary valve core outer spring, the flow channel of the pilot chamber is unblocked, the pressure of the diaphragm upper chamber is smaller than the fluid pressure of the inlet end of the valve body, the diaphragm is pushed by the fluid to move upwards to form a certain distance with the main valve port, the fluid main flow channel is unblocked and is smoothly discharged through the main valve port, and the electromagnetic valve is in a normally open state. When the electromagnetic coil is electrified, the movable iron core moves downwards by the electromagnetic attraction generated by the static fixed iron core, the auxiliary valve core group is pushed by the ejector rod to seal the pilot valve port, the diaphragm moves downwards to seal the main valve port under the action of the pressure difference of the upper cavity and the lower cavity of the diaphragm and the diaphragm spring, the flow channel is blocked, and fluid cannot be discharged, so that the electromagnetic valve is closed.
The existing normally open type electromagnetic valve structure has the main defects that as shown in fig. 4, one more switching block is arranged, and the auxiliary valve core is lengthened, so that the product cost is high, the occupied space is large, and the use space of the electromagnetic valve is limited.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a normally open electromagnetic valve structure without a switching block, and the specific technical scheme is as follows:
a normally open type electromagnetic valve structure without a switching block comprises a valve body, a diaphragm spring, a valve cover, an auxiliary valve core outer spring, an auxiliary valve core group, a fixed iron core, a mandril, a movable iron core, a magnetism isolating pipe group and an electromagnetic coil; the diaphragm spring is positioned above the diaphragm, and the diaphragm spring are arranged in the valve body together; a main valve flow passage is arranged in the valve body, and the valve cover is fixed at the top end of the valve body; the valve cover is provided with a pilot valve cavity, a pilot valve port and a supporting surface for supporting the fixed iron core and the auxiliary valve core outer spring are designed in the pilot valve cavity, the supporting surface in the pilot valve cavity is a plane, the auxiliary valve core outer spring is inserted at the lower end of the auxiliary valve core group, and a pilot valve cavity flow channel is formed between the pilot valve port of the valve cover and the bottom sealing end surface of the auxiliary valve core group; the auxiliary valve core group and the auxiliary valve core outer spring are inserted into a lower section inner hole of the fixed iron core together, the ejector rod is inserted into an upper section inner hole of the fixed iron core, and the movable iron core is arranged above the ejector rod; the fixed iron core, the ejector rod and the movable iron core are integrally arranged in the magnetism isolating pipe group from bottom to top, the lower end of the magnetism isolating pipe group is connected with the valve cover, and the lower end face of the magnetism isolating pipe group tightly presses the fixed iron core; the electromagnetic coil is sleeved outside the magnetism isolating pipe group; when the power is off, the auxiliary valve core group always keeps a distance between the bottom sealing end face and the end face of the pilot valve port under the action of the auxiliary valve core outer spring, so that a flow channel of the pilot valve chamber is smooth.
The normally open type electromagnetic valve structure of the utility model cancels the switching block, directly processes the supporting surface for supporting the fixed iron core and the spring outside the auxiliary valve core in the pilot valve cavity of the valve cover, the supporting surface is a plane, simultaneously, the magnetism isolating pipe group is directly connected with the valve cover, and the lower end surface of the magnetism isolating pipe group tightly presses and fixes the fixed iron core without the switching block, thus not only reducing the product cost, but also reducing the space occupied by the electromagnetic valve.
Preferably, the inner diameter of the inner hole of the upper section of the fixed iron core is smaller than the inner diameter of the inner hole of the lower section.
Preferably, the lower end of the magnetism isolating pipe group is in threaded connection with the valve cover.
Preferably, the electromagnetic coil is locked with the magnetism isolating pipe group through a locking nut at the top.
Preferably, the valve cover is fixed at the top end of the valve body through screws.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is an exploded view of a normally open solenoid valve structure without an adapter block according to the present invention.
Fig. 2 is a structural diagram of a normally open state of a normally open type solenoid valve structure without an adapter block according to the present invention.
Fig. 3 is a structural view of a closed state of a normally open type solenoid valve structure without an adapter block according to the present invention.
Fig. 4 is a diagram of a belt adapter block for a current solenoid valve field, which is a normal open type solenoid valve.
In the figure: 1-valve body, 2-diaphragm, 3-diaphragm spring, 4-valve cover, 5-auxiliary valve core outer spring, 6-auxiliary valve core group, 7-fixed iron core, 8-ejector rod, 9-movable iron core, 10-magnetism isolating tube group, 11-electromagnetic coil, 12-locking nut, 13-screw and 14-transfer block.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b):
as shown in fig. 1-3, the normally open solenoid valve structure without an adapter block of the present invention includes a valve body 1, a diaphragm 2, a diaphragm spring 3, a valve cover 4, an auxiliary valve core outer spring 5, an auxiliary valve core set 6, a fixed iron core 7, a plunger 8, a movable iron core 9, a magnetism isolating tube set 10, a solenoid coil 11, and other sealing elements (O-rings), etc., and directly eliminates the adapter block 14 in the middle of the existing normally open solenoid valve. The directions indicated by the arrows in fig. 2-4 are all media flow directions.
The diaphragm spring 3 is positioned above the diaphragm 2, and the diaphragm spring and the diaphragm are arranged in the valve body 1 together; a main valve flow passage is arranged in the valve body 1, and the valve cover 4 is fixed at the top end of the valve body 1 through a screw 13.
The valve cover 4 is provided with a guide valve cavity, a guide valve port and a support surface for supporting and fixing the iron core 7 and the auxiliary valve core outer spring 5 are designed in the guide valve cavity, and the support surface is a plane. The auxiliary valve core outer spring 5 is inserted at the lower end of the auxiliary valve core group 6, and a certain distance is kept between the end surface of the pilot valve port of the valve cover 4 and the bottom sealing end surface (additionally provided with a sealing element) of the auxiliary valve core group 6 to form a pilot valve cavity flow passage.
The auxiliary valve core group 6 and the auxiliary valve core outer spring 5 are inserted into a lower section inner hole of the fixed iron core 7, the ejector rod 8 is inserted into an upper section inner hole of the fixed iron core 7, the inner diameter of the upper section inner hole is smaller than that of the lower section inner hole, and the movable iron core 9 is arranged above the ejector rod 8.
The fixed iron core 7, the ejector rod 8 and the movable iron core 9 are integrally arranged inside the magnetism isolating pipe group 10 from bottom to top, the lower end of the magnetism isolating pipe group 10 is connected with the valve cover 4 through threads, and the lower end face of the magnetism isolating pipe group 10 tightly presses the fixed iron core 7.
An electromagnetic coil 11 is sleeved outside the magnetism isolating pipe group 10, and the electromagnetic coil 11 is locked with the magnetism isolating pipe group 10 through a locking nut 12 on the top.
The installation process of the utility model is as follows: after the valve body 1, the diaphragm 2, the diaphragm spring 3 and the valve cover 4 are assembled, the valve body is locked by a screw 13; the lower end of an auxiliary valve core group 6 is inserted into an auxiliary valve core outer spring 5, the upper end of the auxiliary valve core group is arranged in an inner hole of a fixed iron core 7, an ejector rod 8 is arranged in an inner hole of the upper section of the fixed iron core 7, the ejector rod 8, a movable iron core 9 and the fixed iron core 7 are arranged in a magnetism isolating tube group 10 together, the lower end thread of the magnetism isolating tube group 10 is directly connected with a valve cover 4, the lower end thread end face of the magnetism isolating tube group 10 compresses the fixed iron core 7, and finally an electromagnetic coil 11 is arranged and locked by a locking nut 12.
The normally open electromagnetic valve structure without the adapter block of the utility model cancels the adapter block 14, and directly processes the supporting surfaces of the fixed iron core 7 and the auxiliary valve core outer spring 5 in the cavity body of the pilot valve of the valve cover 4. The magnetism isolating pipe group 10 is directly connected with the valve cover 4 through threads, the lower end face of the magnetism isolating pipe group tightly presses and firmly fixes the fixed iron core 7, and a transfer block 14 is not needed, so that the product cost is reduced, and meanwhile, the space occupied by the electromagnetic valve is reduced.
When the utility model is powered off, the auxiliary valve core group 6 always keeps a certain distance between the bottom sealing end surface and the end surface of the pilot valve under the action of the auxiliary valve core outer spring 5, so that the flow passage of the pilot valve cavity is unblocked, and the pressure of the upper cavity of the main valve cavity is less than the fluid pressure of the inlet end. Due to the action of pressure difference, the diaphragm 2 at the valve port of the valve body is upwards pushed by fluid and is far away from the main valve port, a certain distance is generated between the diaphragm 2 and the valve port of the valve body, the flow passage of the main valve is unblocked, the electromagnetic valve is in an open state, and the fluid flows out from the outlet end of the valve body through the main valve port.
Under the condition of power-on, the electromagnetic coil 11 generates a magnetic field, the fixed iron core 7 is fixed, the magnetic force generated by the fixed iron core 7 attracts the movable iron core 9 to move downwards, the auxiliary valve core group 6 is pushed to move downwards through the ejector rod 8 until the sealing end surface of the auxiliary valve core group 6 seals the pilot valve port on the valve cover 4, the flow channel of the pilot valve chamber is sealed, the pressure of the upper chamber (the upper chamber of the diaphragm 2) of the main valve chamber is increased and is greater than the pressure of the front opening end of the valve, the diaphragm spring 3 resets and seals the valve port of the valve body, the whole flow channel is sealed, fluid is cut off, and the electromagnetic valve is closed.
The utility model has compact structure, low cost and stable performance, and is suitable for popularization and use.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (5)
1. A normally open type electromagnetic valve structure without a switching block is characterized by comprising a valve body (1), a diaphragm (2), a diaphragm spring (3), a valve cover (4), an auxiliary valve core outer spring (5), an auxiliary valve core group (6), a fixed iron core (7), a push rod (8), a movable iron core (9), a magnetism isolating pipe group (10) and an electromagnetic coil (11); the diaphragm spring (3) is positioned above the diaphragm (2), and the diaphragm spring are arranged in the valve body (1) together; a main valve flow channel is arranged in the valve body (1), and the valve cover (4) is fixed at the top end of the valve body (1); a pilot valve cavity is arranged on the valve cover (4), a pilot valve port and a supporting surface for supporting the fixed iron core (7) and the auxiliary valve core outer spring (5) are designed in the pilot valve cavity, the supporting surface in the pilot valve cavity is a plane, the auxiliary valve core outer spring (5) is inserted at the lower end of the auxiliary valve core group (6), and a pilot valve cavity flow channel is formed between the pilot valve port of the valve cover (4) and the bottom sealing end surface of the auxiliary valve core group (6); the auxiliary valve core group (6) and the auxiliary valve core outer spring (5) are inserted into a lower section inner hole of the fixed iron core (7), the ejector rod (8) is inserted into an upper section inner hole of the fixed iron core (7), and the movable iron core (9) is arranged above the ejector rod (8); the fixed iron core (7), the ejector rod (8) and the movable iron core (9) are integrally arranged in the magnetism isolating pipe group (10) from bottom to top, the lower end of the magnetism isolating pipe group (10) is connected with the valve cover (4), and the lower end face of the magnetism isolating pipe group (10) tightly presses the fixed iron core (7); the electromagnetic coil (11) is sleeved outside the magnetism isolating pipe group (10); when the power is off, the auxiliary valve core group (6) always keeps a distance between the bottom sealing end surface and the end surface of the valve guide port under the action of the auxiliary valve core outer spring (5).
2. An adapter block-free normally open type electromagnetic valve structure according to claim 1, wherein the inner diameter of the inner hole of the upper section of the fixed iron core (7) is smaller than the inner diameter of the inner hole of the lower section.
3. An adapter block-free normally open type electromagnetic valve structure according to claim 1, wherein the lower end of the magnetism isolating pipe group (10) is in threaded connection with the valve cover (4).
4. An adapter block-free normally open type solenoid valve structure according to claim 1, wherein said solenoid coil (11) is locked with said magnetism isolating tube group (10) by a locking nut (12) at the top.
5. An adapter block-free normally open type solenoid valve structure according to claim 1, wherein the valve cover (4) is fixed to the top end of the valve body (1) by a screw (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122306026.7U CN215720981U (en) | 2021-09-23 | 2021-09-23 | Normally open type electromagnetic valve structure without switching block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122306026.7U CN215720981U (en) | 2021-09-23 | 2021-09-23 | Normally open type electromagnetic valve structure without switching block |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215720981U true CN215720981U (en) | 2022-02-01 |
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ID=80023708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122306026.7U Active CN215720981U (en) | 2021-09-23 | 2021-09-23 | Normally open type electromagnetic valve structure without switching block |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215720981U (en) |
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2021
- 2021-09-23 CN CN202122306026.7U patent/CN215720981U/en active Active
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