CN218935370U - Coaxial piston type switching valve - Google Patents
Coaxial piston type switching valve Download PDFInfo
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- CN218935370U CN218935370U CN202222945601.2U CN202222945601U CN218935370U CN 218935370 U CN218935370 U CN 218935370U CN 202222945601 U CN202222945601 U CN 202222945601U CN 218935370 U CN218935370 U CN 218935370U
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- piston
- driving
- switching valve
- tubular valve
- coaxial
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Abstract
The utility model relates to the field of valves, in particular to a coaxial piston type switching valve, which comprises two tubular valve bodies, wherein cavities are arranged in the two tubular valve bodies, two piston plates are connected in the cavities through a driving rod, the piston plates are in airtight connection with the inner walls of the tubular valve bodies, a driving device is arranged between the two tubular valve bodies, and the driving device is in driving connection with the driving rod.
Description
Technical Field
The utility model relates to the field of valves, in particular to a coaxial piston type switching valve.
Background
In the working process of the plastic particle dryer, the drying air and the wet air are required to be switched, the old switching valve is one air cylinder to drive one piston plate to work, and then four air cylinders are controlled by two groups of electromagnetic valves, so that the four air cylinders can not be opened and closed at the same time due to the instability of air pressure although the matching work of the four piston plates is simply realized, the uncertain factors are brought to the production process, meanwhile, impurity garbage can enter the valve body more or less in the dry and wet wind switching working process of the dryer, the service life of the valve body is greatly influenced by long-time cleaning, the impurity garbage entering the valve body is not well cleaned, a piston is in hard contact with the valve body in the conventional switching valves, abrasion is caused when the valve body is operated for a long time, noise is generated, and the sealing effect is poor.
Disclosure of Invention
In order to solve the problems, the utility model provides a coaxial piston type switching valve.
In order to solve the problems, the coaxial piston type switching valve comprises two tubular valve bodies, wherein cavities are formed in the two tubular valve bodies, two piston plates are connected in the cavities through a driving rod, the piston plates are connected with the inner walls of the tubular valve bodies in a sealing manner, and a driving device is arranged between the two tubular valve bodies and is in driving connection with the driving rod.
Preferably, the two tubular valve bodies are provided with three outward interfaces connected with the cavities, the two ends of the tubular valve bodies are also provided with guide seats, and the guide seats are internally provided with second cavities communicated with the cavities.
Preferably, the driving rod penetrates through the tubular valve body, and the two piston plates are slidably sleeved on the outer side of the driving rod.
Preferably, a sealing ring is provided on the outer peripheral side of the piston plate.
Preferably, springs are arranged on two sides of the piston plate, a fixing hole is formed in the driving rod, a fixing bolt is arranged in the fixing hole, and one end of each spring is abutted to the fixing bolt.
Preferably, a driving air cylinder is fixedly arranged between the tubular valve bodies, one end of the driving rod is fixedly connected with a driving connecting plate, and the middle part of the driving connecting plate is fixedly connected to a piston rod of the driving air cylinder.
Preferably, a screen is arranged at the interface.
The utility model has the beneficial effects that: four piston plates are driven by one cylinder to work simultaneously, the asynchronous risk of the piston plate movement is avoided, the stability of the piston plate movement is greatly improved, meanwhile, impurities enter the valve body during working, the impurities can be effectively filtered out through the arranged screen mesh at the interface, and the screen mesh is cleaned up during maintenance, so that the maintenance cost at ordinary times is reduced.
Drawings
FIG. 1 is a schematic view of the overall structure of the present utility model;
FIG. 2 is a schematic view of the structure of the driving rod and piston of the present utility model;
FIG. 3 is a schematic view of a screen structure according to the present utility model.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
According to fig. 1-3, a coaxial piston switching valve comprises: the tubular valve body comprises two cylinder barrels 1 with cavities inside, the two cylinder barrels 1 are fixedly connected together through a connecting plate 201, three interfaces are respectively arranged on the two cylinder barrels 1, the middle interface is an air inlet 101, the interface 107 at the upper end of the right cylinder barrel 1 is a dry air inlet, the interface 107 at the lower end is a wet air inlet, the upper end interface 107 of the left cylinder barrel 1 is a wet air inlet, the interface 107 at the lower end is a dry air inlet, flanges 108 are respectively arranged at the interfaces, the flanges 108 are used for improving tightness and facilitating installation of connecting parts, two piston plates 104 which are hermetically connected with the cylinder barrels 1 are respectively arranged in the cylinder barrels 1, sealing rings 110 are arranged on the outer circumference sides of the piston plates 104, the sealing rings 110 are arranged to ensure the air tightness of the valve body well, the piston plates 104 are not leaked on a driving rod 103 penetrating through the valve body in a sliding manner, the two sides of the two piston plates 104 are provided with springs 105, the driving rod 103 is provided with a fixing hole, the fixing hole is provided with a fixing bolt 106, one end of each spring 105 is abutted against the fixing bolt 106, two second cavities are respectively arranged at two ends of the cylinder barrel 1 body and are communicated with the cavities in the cylinder barrel 1, guide seats are arranged on the second cavities and are used for guiding the movement of the driving rod 103, the purpose of the second cavities is to connect more pipelines for carrying out various operations, a driving cylinder 2 is fixedly arranged between the tubular valve bodies, the driving cylinder 2 is fixedly arranged between the tubular valve bodies through a connecting plate 201, a piston rod at one end of the driving cylinder 2 is fixedly connected in the middle of the driving connecting plate 109, the driving rods are fixedly connected at two ends of the driving connecting plate 109, the driving cylinder 2 drives the driving rod 103 to move through the piston rod, the driving rod 103 drives the piston plate 104 to move together, so that the valve body interface is switched between communication and closing.
Working principle: the middle connector 101 is connected with a water storage tank of the dryer during installation, a drying air inlet is connected with a drying air pipeline, a wet air inlet is connected with a screening box of the dryer, a piston rod of a driving air cylinder is retracted during operation, the air inlet is communicated with the wet air inlet, wet air enters the water storage tank through the wet air inlet and the air inlet, when the water storage tank is close to saturation, the driving air cylinder is controlled to act through an external controller, the piston rod of the driving air cylinder stretches out, the wet air inlet is disconnected with the air inlet, the drying air inlet is communicated with the air inlet, at the moment, the drying air enters the water storage tank through the drying air inlet and the air inlet, moisture in the water storage tank is dried, and after the moisture in the water storage tank is dried, the air cylinder is driven to perform the next cycle through an external controller,
while the utility model has been described in terms of embodiments, it will be appreciated by those skilled in the art that the utility model is not limited thereto but rather includes the drawings and the description of the embodiments above. Any modifications which do not depart from the functional and structural principles of the present utility model are intended to be included within the scope of the appended claims.
Claims (7)
1. A coaxial piston type switching valve, characterized in that: the piston plate is connected with the inner wall of the tubular valve body in a sealing way, a driving device is arranged between the two tubular valve bodies, and the driving device is in driving connection with the driving rod.
2. A coaxial piston switching valve as claimed in claim 1 wherein: three outward interfaces connected with the cavities are arranged on the two tubular valve bodies, guide seats are further arranged at the two ends of the tubular valve bodies, and a second cavity communicated with the cavities is arranged in the guide seats.
3. A coaxial piston switching valve as claimed in claim 2, wherein: the driving rod penetrates through the tubular valve body, and the two piston plates are slidably sleeved on the outer side of the driving rod.
4. A coaxial piston switching valve according to claim 3, wherein: and a sealing ring is arranged on the outer periphery side of the piston plate.
5. The coaxial piston switching valve of claim 4, wherein: the piston plate is characterized in that springs are arranged on two sides of the piston plate, a fixing hole is formed in the driving rod, a fixing bolt is arranged in the fixing hole, and one end of each spring is abutted to the fixing bolt.
6. A coaxial piston switching valve as claimed in claim 1 wherein: a driving air cylinder is fixedly arranged between the two tubular valve bodies, one end of the driving rod is fixedly connected with a driving connecting plate, and the middle part of the driving connecting plate is fixedly connected to a piston rod of the driving air cylinder.
7. A coaxial piston switching valve as claimed in claim 2, wherein: the interface is provided with a screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222945601.2U CN218935370U (en) | 2022-11-06 | 2022-11-06 | Coaxial piston type switching valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222945601.2U CN218935370U (en) | 2022-11-06 | 2022-11-06 | Coaxial piston type switching valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218935370U true CN218935370U (en) | 2023-04-28 |
Family
ID=86085824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222945601.2U Active CN218935370U (en) | 2022-11-06 | 2022-11-06 | Coaxial piston type switching valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218935370U (en) |
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2022
- 2022-11-06 CN CN202222945601.2U patent/CN218935370U/en active Active
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