Diaphragm type two-position three-way valve

Abstract

The diaphragm type two-position three-way valve comprises a casting body, a driving body and a lower connector, the driving body and the lower connector are symmetrically arranged at the upper end and the lower end of the casting body, a control cavity is formed in the driving body, a backwashing opening is formed in the side wall of the driving body, and the backwashing opening penetrates through the side wall of the driving body and is connected with the control cavity. A valve rod is arranged in the casting body, a valve body is fixedly arranged at the lower end of the valve rod, the valve body is arranged in the lower end of the casting body in a sliding mode and arranged above the lower connector, a diaphragm is fixedly arranged at the upper end of the valve rod and fixedly arranged in the control cavity, a spring is arranged above the diaphragm, and the two ends of the spring are fixedly connected with the control cavity and the diaphragm respectively. The utility model belongs to the technical field of valves, and particularly provides a diaphragm type two-position three-way valve which is low in power consumption, suitable for places without power supply conditions, excellent in corrosion resistance, capable of changing the flow direction of water in a short stroke and saving the number of valves so as to save cost.

Description

Technical Field

[0001] The utility model belongs to the technical field of valves, and specifically refers to a diaphragm type two-way three-way valve. Background Art

[0002] At present, ball valves or butterfly valves and other on-off valves are basically used in the swimming pool filter market, and five valves are required to realize the normal filtration and backwashing of the swimming pool filter; if the on-off valve is manual, it is time-consuming and laborious, increasing the labor cost. If the on-off valve is electrically controlled, supporting facilities such as a power supply are required, and the power consumption is large. In view of the above problems, this invention document proposes a diaphragm type two-way three-way valve to solve the above problems. Content of the Utility Model

[0003] To solve the above existing problems, the utility model provides a diaphragm type two-way three-way valve with low power consumption, suitable for sites without power supply conditions, excellent anti-corrosion performance, short stroke to change the water flow direction, saving the number of valves, and thus saving costs.

[0004] The technical solution adopted by the utility model is as follows: The diaphragm type two-way three-way valve of the utility model includes a casting body, a driving body and a lower joint. The driving body and the lower joint are symmetrically arranged at the upper and lower ends of the casting body. A control cavity is arranged inside the driving body. An anti-flushing port is arranged on the side wall of the driving body, and the anti-flushing port penetrates through the side wall of the driving body and is connected to the control cavity. A valve rod is arranged inside the casting body. A valve body is fixedly arranged at the lower end of the valve rod. The valve body is slidably arranged inside the lower end of the casting body and above the lower joint. A diaphragm is fixedly arranged at the upper end of the valve rod. The diaphragm is fixedly arranged inside the control cavity. A spring is arranged above the diaphragm, and both ends of the spring are fixedly connected to the control cavity and the diaphragm respectively.

[0005] Further, a pool water inlet and a filter inlet are respectively arranged on both sides of the casting body, and the pool water inlet is arranged above the filter inlet.

[0006] Further, a sewage discharge port is arranged at the lower end of the lower joint, and the sewage discharge port penetrates through the lower joint and is connected to the casting body.

[0007] Further, the anti-flushing port is connected to the lower end of the control cavity, and the anti-flushing port is arranged on one side of the diaphragm.

[0008] Further, a sealing ring is fixedly arranged inside the driving body, and the sealing ring is sleeved outside the valve rod.

[0009] Further, a sealing ring is sleeved outside the lower end of the driving body, and the sealing ring is arranged between the driving body and the casting body.

[0010] Further, the casting body, the driving body, the lower joint, the valve rod and the valve body are made of 304 stainless steel material.

[0011] The beneficial effects achieved by the present utility model with the above structure are as follows: The diaphragm type two-way three-way valve proposed in this solution is made of 304 stainless steel, with excellent anti-corrosion performance; it saves the number of valves and costs; this valve uses hydraulic power to drive the diaphragm and is automatically controlled by an electromagnetic valve, with low power consumption. The power supply can be driven by dry batteries and can also be used in places without power supply conditions. Brief Description of the Drawings

[0012] Figure 1 It is a three-dimensional view of the diaphragm type two-way three-way valve proposed in this solution;

[0013] Figure 2 It is a structural schematic diagram of the diaphragm type two-way three-way valve proposed in this solution;

[0014] Figure 3 It is a three-dimensional view of the valve body of the diaphragm type two-way three-way valve proposed in this solution.

[0015] The drawings are used to provide a further understanding of the present utility model and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model and do not constitute a limitation to the present utility model. In the drawings: 1. Casting body, 2. Driving body, 3. Lower joint, 4. Control cavity, 5. Backwashing port, 6. Valve stem, 7. Valve body, 8. Diaphragm, 9. Spring, 10. Pool water inlet, 11. Filter inlet, 12. Drain port, 13. Sealing ring, 14. Sealing gasket. Detailed Embodiment

[0016] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments; based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present utility model.

[0017] As Figures 1 to 3 shown, the diaphragm type two-way three-way valve proposed in this solution includes a casting body 1, a driving body 2 and a lower joint 3. The driving body 2 and the lower joint 3 are symmetrically arranged at the upper and lower ends of the casting body 1. A control cavity 4 is provided in the driving body 2. A backwashing port 5 is provided on the side wall of the driving body 2. The backwashing port 5 penetrates through the side wall of the driving body 2 and is connected to the control cavity 4. A valve stem 6 is provided in the casting body 1. The lower end of the valve stem 6 is fixedly provided with a valve body 7. The valve body 7 is slidably arranged in the lower end of the casting body 1 and above the lower joint 3. The upper end of the valve stem 6 is fixedly provided with a diaphragm 8. The diaphragm 8 is fixedly arranged in the control cavity 4. A spring 9 is provided above the diaphragm 8. Both ends of the spring 9 are fixedly connected to the control cavity 4 and the diaphragm 8 respectively.

[0018] As Figure 1 andFigure 2 As shown, on both sides of the casting body 1, there are respectively a pool water inlet 10 and a filter inlet 11. The pool water inlet 10 is arranged above the filter inlet 11. At the lower end of the lower joint 3, there is a sewage outlet 12. The sewage outlet 12 penetrates through the lower joint 3 and is connected to the casting body 1. The backwash port 5 is connected to the lower end of the control chamber 4, and the backwash port 5 is arranged on one side of the diaphragm 8.

[0019] As Figure 2 As shown, a sealing ring 13 is fixedly arranged inside the driving body 2. The sealing ring 13 is sleeved outside the valve stem 6. An O-ring 14 is sleeved outside the lower end of the driving body 2, and the O-ring 14 is arranged between the driving body 2 and the casting body 1.

[0020] Among them, the casting body 1, the driving body 2, the lower joint 3, the valve stem 6 and the valve body 7 are made of 304 stainless steel material.

[0021] During specific use, in the filtration mode, the spring 9 presses down the diaphragm 8. The diaphragm 8 drives the valve body 7 through the valve stem 6 to cut off the connection between the sewage outlet 12 and the casting body 1. The filter inlets 11 and the sewage outlet 12 on the left and right of the casting body 1 are communicated. At this time, water flows from the pool water inlet 10 to the filter inlet 11.

[0022] In the backwash mode, the backwash port 5 is opened, and the pool water inlet 10 is closed. Air flows into the control chamber 4 from the backwash port 5. The air jacks up the diaphragm 8. The diaphragm 8 drives the valve stem 6 to rise. The valve stem 6 drives the valve body 7 to move upward. The valve body 7 cuts off the connection between the pool water inlet 10 and the filter inlet 11, so that the filter inlet 11 is connected to the sewage outlet 12. At this time, water flows from the filter inlet 11 to the sewage outlet 12.

[0023] The stainless steel precision casting valve body 7, the lower joint 3 has options of grooved connection or threaded connection. The valve core runs smoothly and reliably. The material combination is highly corrosion-resistant and suitable for a variety of fluid media. This diaphragm 8 driving structure can smoothly change the water flow direction with only a very short stroke.

[0024] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0025] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. Diaphragm type two-position three-way valve, characterized by: It includes a casting body, a driving body and a lower joint, the driving body and the lower joint are symmetrically arranged at the upper and lower ends of the casting body, the driving body is provided with a control cavity, the side wall of the driving body is provided with a backwashing port, the backwashing port passes through the side wall of the driving body and is connected with the control cavity, a valve stem is provided in the casting body, a valve body is fixedly provided at the lower end of the valve stem, the valve body is slidably arranged in the lower end of the casting body and arranged above the lower joint, a diaphragm is fixedly provided at the upper end of the valve stem, the diaphragm is fixedly arranged in the control cavity, a spring is provided above the diaphragm, and the two ends of the spring are respectively fixedly connected to the control cavity and the diaphragm.

2. The diaphragm type two-position three-way valve according to claim 1, characterized in that: A pool water inlet and a filter inlet are respectively arranged on both sides of the casting body, and the pool water inlet is arranged above the filter inlet.

3. The diaphragm type two-position three-way valve according to claim 1, characterized in that: A sewage outlet is arranged at the lower end of the lower joint, and the sewage outlet passes through the lower joint and is connected with the casting body.

4. The diaphragm type two-position three-way valve according to claim 1, characterized in that: The backwash port is connected to the lower end of the control chamber, and the backwash port is arranged on one side of the diaphragm.

5. The diaphragm type two-position three-way valve according to claim 1, characterized in that: A sealing ring is fixedly arranged in the driving body, and the sealing ring is sleeved on the outer side of the valve stem.

6. The diaphragm type two-position three-way valve according to claim 1, characterized in that: A sealing ring is sleeved on the outer side of the lower end of the driving body, and the sealing ring is arranged between the driving body and the casting body.

7. The diaphragm type two-position three-way valve according to claim 1, characterized in that: The casting body, the driving body, the lower joint, the valve stem and the valve body are made of 304 stainless steel.

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