CN111237529A - Electromagnetic valve - Google Patents
Electromagnetic valve Download PDFInfo
- Publication number
- CN111237529A CN111237529A CN202010201719.7A CN202010201719A CN111237529A CN 111237529 A CN111237529 A CN 111237529A CN 202010201719 A CN202010201719 A CN 202010201719A CN 111237529 A CN111237529 A CN 111237529A
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- CN
- China
- Prior art keywords
- piston
- cavity
- valve
- hole
- piston core
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0644—One-way valve
- F16K31/0655—Lift valves
- F16K31/0658—Armature and valve member being one single element
- F16K31/0662—Armature and valve member being one single element with a ball-shaped valve member
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/14—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with ball-shaped valve member
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/46—Attachment of sealing rings
- F16K1/465—Attachment of sealing rings to the valve seats
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
An electromagnetic valve belongs to the technical field of refrigeration components. The piston part comprises a piston core, a piston and a sealing block, wherein the piston is provided with a first step hole with two step surfaces, the piston core and the sealing block are arranged on the step surfaces in the corresponding first step holes from bottom to top, the top hole wall of each first step hole extends upwards to form a riveting part, and the riveting part is inwards shrunk to limit and fix the outer side part of the sealing block. According to the invention, the sealing element is arranged at the top of the piston, and the sealing element is limited in the step hole of the piston through the riveting compression opening, so that a riveting component is prevented from falling into an air conditioning system, the safety of the system is improved, and the flow of the electromagnetic valve is not influenced. The piston and the sealing block are easy to process, the processing efficiency can be improved, and the processing cost is reduced.
Description
Technical Field
The invention belongs to the technical field of refrigeration parts, and particularly relates to an electromagnetic valve for an air conditioning system.
Background
Patent publication No. CN 101893098A discloses a solenoid valve with reversible function, whose scheme is: the electromagnetic valve comprises a piston with a balance hole and a valve core accommodating cavity, and the balance hole is communicated with the valve core accommodating cavity through a sealing port; the valve core accommodating cavity is movably provided with a valve core, the top of the valve core is provided with a sealing surface for plugging a sealing port, the main body part of the valve core is provided with a central through hole arranged along the axial direction of the main body part, and at least one radial hole for connecting the valve core accommodating cavity and the central through hole; the valve core accommodating cavity is a straight cylinder type cavity, and the main body of the valve core comprises an upper part and a lower part with the diameter larger than that of the upper part; the lower part is tightly matched with the inner wall of the valve core accommodating cavity, and the radial hole is arranged at the upper part. The inner wall of the lower end part of the piston is provided with a gasket coaxial with the valve core, the diameter of the outer circle of the gasket is slightly larger than that of the outer circle of the lower part, the diameter of the inner circle of the gasket is slightly smaller than or equal to that of the inner circle of the lower part, and the gasket and the piston are fixed in a riveting mode. However, such a solenoid valve has the following drawbacks:
1. when the fluid flow direction of the solenoid valve is switched or the pressure fluctuates, the piston core can impact the gasket, and especially under the high-pressure condition, the impact force of the piston core to the gasket is larger. Under the condition that the piston core is impacted for many times, the riveting part of the piston is easy to break, so that the gasket and the piston core fall off and fall into a system. Especially, when the electromagnetic valve is installed at a position close to the compressor, the fallen gasket and the piston core directly fall into the compressor to damage the compressor, so that the whole system is damaged.
2. Because the riveting part is very close to the valve port, when the piston impacts the valve port, the strength of the riveting part of the gasket can be influenced by the stress generated by the impact of the piston, so that the damage of the riveting part of the gasket is accelerated.
3. In the prior art, because the riveting part of the piston is positioned at the lower end of the sealing line of the piston and the main valve port, when the main valve port is opened, the riveting part can not be completely separated from the valve port, and the full-open flow of the electromagnetic valve is influenced.
4. Because the diameter of the gasket is smaller than that of the valve core, the fluid inflow speed is too low, the pressure difference between the upper part and the lower part of the piston core is difficult to build, and the valve opening is slow.
Disclosure of Invention
In view of the problems of the solenoid valve in the background, the present invention aims to provide a solenoid valve with a piston rivet joint portion not easy to break and damage and convenient to assemble.
Therefore, the invention adopts the following technical scheme: a solenoid valve comprises a valve seat, a piston component and a valve body, wherein the top opening of the valve seat forms a first valve cavity, the bottom of the valve body is fixed at the upper end of the first valve cavity, the first valve cavity forms a sealed cavity through the valve body and the valve seat, the side part of the first valve cavity is communicated with a first connecting pipe, and the bottom of the first valve cavity is communicated with a second connecting pipe through a main valve opening;
the piston component is characterized by comprising a piston core, a piston and a sealing block, wherein the piston is provided with a first step hole with two step surfaces, the piston core and the sealing block are arranged on the step surfaces in the corresponding first step holes from bottom to top, the top hole wall of the first step hole extends upwards to form a riveting part, and the riveting part limits and fixes the outer side part of the sealing block by inwards necking.
In addition to the above technical solutions, the present invention also includes the following technical features.
The sealing block is provided with a second step hole which is sequentially reduced from bottom to top and is provided with two step surfaces, and the upper section hole of the second step hole is used as a valve port which is matched and abutted with the steel ball of the electromagnetic valve and is used for sealing; the lower section hole of the second stepped hole is used as a second valve cavity for the movement of the piston core, the piston core is movably arranged between the lower step surface of the first stepped hole and the lower step surface of the second stepped hole, the thickness of the sealing block can be increased by forming a containing cavity of the piston core through two cavities, and the deformation amount of the sealing block during riveting is reduced.
The piston core is in a conical shape with a small upper part and a large lower part, the top of the piston core is provided with a sealing part, the bottom of the piston core is provided with an opening, a first cavity and a second cavity are formed in the piston core from top to bottom, and the side part of the first cavity is provided with a through hole communicated with the second valve cavity.
The piston with the installation of sealing block interference fit to improve the joint strength of sealing block and piston, prevent piston core upward movement, when striking sealing block, sealing block and piston drop.
The bottom of the sealing block is provided with a sealing line, so that the medium can be prevented from leaking into the first valve cavity from a gap between the sealing block and the piston, the internal leakage of a product is increased, and the valve closing function of the product is influenced.
The sealing surface on the sealing part is a conical surface or a round surface.
The through holes arranged on the second cavity are multiple and are uniformly distributed circumferentially.
The first cavity is smaller than the second cavity in width, and a step surface is formed in a transition area of the first cavity and the second cavity, so that the stress area of the piston core can be increased, and the gravity of the piston core is reduced. The piston core can move towards the valve port more easily, and the reverse minimum valve opening pressure difference is reduced.
The piston core is made of aluminum materials, so that the dead weight is reduced, and the reverse minimum valve opening pressure difference is reduced.
The edge of the opening at the bottom of the piston is provided with a chamfer, so that the contact area between the bottom surface of the piston core and the piston can be reduced, the stress area of the piston core 8 is increased, and the reverse minimum valve opening pressure difference is reduced.
The lower step surface of the first step hole is matched with the top of the piston core, so that the stress area of the piston core can be increased, the throttling phenomenon is avoided, and the reverse minimum valve opening pressure difference is reduced.
The lower end of the piston core is provided with a limiting element which is integrated with the piston.
The invention can achieve the following beneficial effects: 1. according to the invention, the sealing element is arranged at the top of the piston, and the sealing element is limited in the step hole of the piston through the riveting compression opening, so that a riveting component is prevented from falling into an air conditioning system, the safety of the system is improved, and the flow of the electromagnetic valve is not influenced. 2. The piston and the sealing block are easy to process, the processing efficiency can be improved, and the processing cost is reduced.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of the piston assembly of the present invention.
Fig. 3 is a schematic view of the piston structure of the present invention.
Fig. 4 is a schematic view of the sealing block structure of the present invention.
Fig. 5 is a schematic view of the piston core structure of the present invention.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings.
As shown in fig. 1-5, the present invention includes a valve seat 1, a piston member and a valve body 2, wherein the top opening of the valve seat 1 forms a first valve chamber, the bottom of the valve body is fixed at the upper end of the first valve chamber, the first valve chamber forms a sealed chamber through the valve body 2 and the valve seat 1, the side of the first valve chamber is communicated with a first connecting pipe 3, and the bottom of the first valve chamber is communicated with a second connecting pipe 4 through a main valve opening; the piston part comprises a piston core 6, a piston 5 and a sealing block 7, the piston 5 is provided with a balance hole 53, the piston 5 is provided with a first step hole 51 with two step faces, the piston core 6 and the sealing block 7 are installed on the step faces in the corresponding first step holes from bottom to top, the top hole wall of the first step hole extends upwards to form a riveting part 52, and the riveting part 52 is inwards reduced to limit and fix the outer side part of the sealing block 7. The sealing block 7 is provided with a second step hole 71 which is sequentially reduced from bottom to top and is provided with two step surfaces, and the upper section hole of the second step hole 71 is used as a valve port 72 which is matched and abutted with the steel ball 8 of the electromagnetic valve; the lower section hole of the second stepped hole 71 is used as a movable second valve cavity 73 of the piston core 6, the piston core 6 is movably arranged between the lower step surface of the first stepped hole 51 and the lower step surface of the second stepped hole 71, the thickness of the sealing block can be increased by forming a containing cavity of the piston core by two cavity bodies, and the deformation amount of the sealing block during riveting is reduced. The piston core 6 is in a conical shape with a small upper part and a large lower part, the top of the piston core 6 is provided with a sealing part, the bottom of the piston core 6 is provided with an opening, a first cavity 61 and a second cavity 62 are formed inside the piston core from top to bottom, and the side part of the first cavity 61 is provided with a through hole 63 communicated with the second valve cavity 73.
Further preferably, piston 5 and seal block 7 interference fit installation to improve the joint strength of seal block and piston, prevent the upward motion of piston core, when striking the seal block, the seal block drops with the piston. The bottom of the sealing block 7 is provided with a sealing line, which can prevent medium from leaking into the first valve cavity from a gap between the sealing block and the piston, so that the internal leakage of a product is increased, and the valve closing function of the product is influenced. The edge of the opening at the bottom of the piston 5 is provided with a chamfer, so that the contact area between the bottom surface of the piston core and the piston can be reduced, the stress area of the piston core 8 is increased, and the reverse minimum valve opening pressure difference is reduced. The lower step surface of the first step hole 51 is matched with the top of the piston core 6, so that the stress area of the piston core can be increased, the throttling phenomenon is avoided, and the reverse minimum valve opening pressure difference is reduced.
Further preferably, the first cavity 61 is smaller than the second cavity 62 in width, and a step surface is formed at a transition area between the first cavity 61 and the second cavity 62, so that the force-bearing area of the piston core can be increased, and the gravity of the piston core itself can be reduced. The piston core can move towards the valve port more easily, and the reverse minimum valve opening pressure difference is reduced.
Further preferably, the piston core 6 is made of aluminum material, so that the self weight is reduced and the reverse minimum valve opening pressure difference is reduced. The lower extreme of piston core 6 is provided with the spacing original paper that links an organic whole with piston 5.
The method has the advantages that ① fluid flows forwards, no matter the piston is opened or closed, the piston core is in a weightless state due to the very fast movement of the piston, so that impact force is generated to the piston, in the scheme, the piston core impacts the body of the piston, the impact force cannot be transmitted to the riveting part (the impact force of the piston core in the prior art is borne by the riveting part), ② forward flow is suddenly switched to a reverse flow state, the system pressure difference cannot be large, the impact force of the piston core to the sealing block is very small, even if the system pressure is very large, as long as the piston core does not close the sealing block, the two ends of the piston core also establish very large pressure difference, the system pressure difference cannot be large, the sealing block cannot be damaged due to the valve opening state, the system pressure difference cannot be large, and the sealing block cannot be damaged due to the fact that the valve port is in the valve opening state, so that the sealing block cannot be damaged by electromagnetic force, and the sealing block cannot be damaged.
Claims (10)
1. A solenoid valve comprises a valve seat (1), a piston component and a valve body (2), wherein the top of the valve seat (1) is provided with an opening to form a first valve cavity, the bottom of the valve body is fixed at the upper end of the first valve cavity, the first valve cavity is formed into a sealed cavity through the valve body (2) and the valve seat (1), the side part of the first valve cavity is communicated with a first connecting pipe (3), and the bottom of the first valve cavity is communicated with a second connecting pipe (4) through a main valve opening;
the method is characterized in that: the piston component comprises a piston core (6), a piston (5) and a sealing block (7), wherein a first step hole (51) with two step surfaces is formed in the piston (5), the piston core (6) and the sealing block (7) are installed on the step surfaces in the corresponding first step holes from bottom to top, a riveting part (52) extends upwards from the top hole wall of the first step hole, and the riveting part (52) is inwards shrunk to limit and fix the outer side part of the sealing block (7).
2. A solenoid valve according to claim 1, wherein: the sealing block (7) is provided with a second step hole (71) which is sequentially reduced from bottom to top and is provided with two step surfaces, and the upper section hole of the second step hole (71) is used as a valve port (72) which is matched and abutted with a steel ball (8) of the electromagnetic valve; the lower section hole of the second stepped hole (71) is used as a second valve cavity (73) for the movement of the piston core (6), and the piston core (6) is movably arranged between the lower step surface of the first stepped hole (51) and the lower step surface of the second stepped hole (71).
3. A solenoid valve according to claim 2, wherein: the piston core (6) is in a conical shape with a small top and a large bottom, the top of the piston core (6) is provided with a sealing part, the bottom of the piston core (6) is provided with an opening, a first cavity (61) and a second cavity (62) are formed inside the piston core from top to bottom, and the side part of the first cavity (61) is provided with a through hole (63) communicated with the second valve cavity (73).
4. A solenoid valve according to claim 3, wherein: the piston (5) and the sealing block (7) are arranged in an interference fit manner.
5. A solenoid valve according to claim 4 wherein: the bottom of the sealing block (7) is provided with a sealing line.
6. A solenoid valve according to claim 5 wherein: the first cavity (61) is smaller than the second cavity (62), and a step surface is formed in a transition area of the first cavity (61) and the second cavity (62).
7. A solenoid valve according to claim 6 wherein: the piston core (6) is made of aluminum materials.
8. A solenoid valve according to claim 7, wherein: and the edge of the opening at the bottom of the piston (5) is provided with a chamfer.
9. A solenoid valve according to claim 8, wherein: the lower step surface of the first step hole (51) is matched with the top of the piston core (6).
10. A solenoid valve according to claim 1 or 9, wherein: the lower end of the piston core (6) is provided with a limiting element which is connected with the piston (5) into a whole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010201719.7A CN111237529A (en) | 2020-03-20 | 2020-03-20 | Electromagnetic valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010201719.7A CN111237529A (en) | 2020-03-20 | 2020-03-20 | Electromagnetic valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111237529A true CN111237529A (en) | 2020-06-05 |
Family
ID=70864790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010201719.7A Pending CN111237529A (en) | 2020-03-20 | 2020-03-20 | Electromagnetic valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111237529A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022001873A1 (en) * | 2020-07-01 | 2022-01-06 | 浙江盾安人工环境股份有限公司 | Solenoid valve |
-
2020
- 2020-03-20 CN CN202010201719.7A patent/CN111237529A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022001873A1 (en) * | 2020-07-01 | 2022-01-06 | 浙江盾安人工环境股份有限公司 | Solenoid valve |
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