Split type steel cylinder valve

Abstract

The utility model discloses a split type steel cylinder valve which comprises a valve body, a valve rod arranged in the valve body and a switch valve element arranged on the valve rod, a knob for driving the valve rod to rotate is arranged on the valve rod, a gas channel is arranged in the valve body, the switch valve element is driven by the valve rod to ascend and descend so as to open or close the gas channel, and the valve rod comprises an upper rod body and a lower rod body. A square head is arranged at the bottom end of the upper rod body, the lower rod body is in threaded connection with the valve body, a square groove is formed in the top of the lower rod body, the square head is matched with the square groove in shape, a distance is formed between the bottom end of the square head and the bottom of the square groove, and the switch valve element is rotationally arranged at the bottom of the lower rod body. The valve rod is arranged to be of a split type structure, the rotary knob and the upper valve rod can rotate at the original height, the lower valve rod ascends and descends to drive the switch valve element to ascend and descend to achieve opening and closing of the valve, meanwhile, the lower valve element is rotationally connected with the lower rod body, so that following rotation of the lower valve element is avoided, and unnecessary abrasion can be reduced.

Description

Technical Field

[0001] The utility model relates to a valve, in particular to a split cylinder valve. Background Art

[0002] The split cylinder valve is mainly used to open and close a liquefied gas cylinder, ensuring timely closing after use to prevent gas leakage.

[0003] At present, the valve stem of the split cylinder valve on the market is usually of an integral structure and fixedly connected to the valve core. It is threadedly engaged with the valve body to adjust the height of the valve core by lifting, so as to realize the opening and closing of the valve.

[0004] In the above valve stem structure, when rotating and adjusting, there are two actions of lifting and rotating for the knob, valve stem and valve core. Among them, the lifting of the knob will affect the rotation when the space is small. For example, when making a cabinet, the height for the knob to lift needs to be reserved, and the rotation of the valve core will cause unnecessary wear during use, affecting its service life. Summary of the Utility Model

[0005] Based on the deficiency that the valve core following rotation structure in the prior art will cause unnecessary wear and affect the service life, the utility model provides a split cylinder valve.

[0006] The technical solution adopted by the utility model to solve the above technical problems is as follows:

[0007] The split cylinder valve includes a valve body, a valve stem arranged in the valve body, and a switch valve core arranged on the valve stem. A knob for driving the valve stem to rotate is arranged on the valve stem. A gas passage is provided in the valve body. The switch valve core is lifted or lowered under the drive of the valve stem to open or close the gas passage. The valve stem includes an upper rod body and a lower rod body. A square head is provided at the bottom end of the upper rod body. The lower rod body is threadedly connected to the valve body and a square groove is provided at its top. The square head and the square groove are of matching shapes. There is a spacing between the bottom end of the square head and the bottom of the square groove. The switch valve core is rotatably arranged at the bottom of the lower rod body.

[0008] Preferably, the valve body includes a vertical part and a horizontal part. The horizontal part has an air outlet interface, and the vertical part has an air inlet interface.

[0009] Preferably, a slit is provided at the vertical part and a concave switch groove is provided at the top of the slit. The valve core can be abutted against the switch groove to block it.

[0010] Preferably, the gas passage includes an air inlet passage at the bottom of the vertical part and an air outlet passage in the horizontal part. The air inlet passage and the air outlet passage are communicated and form a 90-degree angle.

[0011] Preferably, a safety valve core and a spring are provided in the air outlet passage, and an annular step for the safety valve to abut against is provided inside. The width of the safety valve core is smaller than the diameter of the air outlet passage. The spring applies an elastic force to the safety valve core to make the safety valve core abut against the annular step, blocking the through hole in the middle of the annular step. The horizontal part is provided with a slit for air outlet, and one end of the spring abuts against the periphery of the slit.

[0012] Preferably, both the end of the horizontal part and the bottom end of the vertical part are provided with internal and external threads for connection.

[0013] Preferably, a sealing ring that forms a seal with the valve body is embedded on the upper rod body. There is a sealing step inside the valve body. The lower rod body is threadedly connected above the sealing step and the bottom end of the lower rod body is located below the sealing step. The bottom of the switch valve core has a plug, and the top surface of the plug has an abutting plane. When the switch valve core rises, the abutting plane abuts against the step surface of the sealing step to form a seal.

[0014] Preferably, an annular elastic sealing washer is provided on the top surface of the plug.

[0015] Preferably, the top of the vertical part of the valve body is provided with internal threads and is threadedly connected with a mounting seat body. The middle of the mounting seat body is provided with a mounting hole, and the upper rod body is rotatably connected to the mounting hole.

[0016] Preferably, a press-fitting step is provided on the upper rod body. The knob is sleeved above the press-fitting step and is tightly fixed by a pressing ring threadedly connected to the top of the upper rod body.

[0017] Compared with the prior art, the advantages of the present utility model are as follows: By setting the valve stem as a split structure in this application, the knob and the upper valve stem can rotate at the original height, and the lifting of the lower valve stem drives the lifting of the switch valve core to realize the opening and closing of the valve. At the same time, the lower valve core is rotatably connected to the lower rod body, thus avoiding its rotation and reducing unnecessary wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present utility model will be further described in detail below in conjunction with the drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are only drawn for the purpose of explaining the preferred embodiments and should not be regarded as limiting the scope of the present utility model. In addition, unless otherwise specified, the drawings only schematically show the composition or structure of the described object and may include exaggerated displays, and the drawings are not necessarily drawn to scale.

[0019] Figure 1 is the front view of this application;

[0020] Figure 2 is the sectional view of this application;

[0021] Figure 3 is the three-dimensional view of this application;

[0022] Figure 4 is the exploded view of the present application;

[0023] In the figure: 10, valve body; 101, vertical part; 1011, sealing step; 102, horizontal part; 1021, annular step; 20, valve stem; 201, upper rod body; 2011, square head; 202, lower rod body; 2021, square groove; 30, knob; 40, mounting seat body; 50, pressing ring; 60, sealing ring; 70, switch valve core; 80, pressure reducing valve core; 90, elastic spring. Detailed implementation manners

[0024] The preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are only descriptive and exemplary, and should not be construed as limiting the protection scope of the present utility model.

[0025] It should be noted that like reference numerals denote like items in the following drawings. Therefore, once an item is defined in one drawing, it may not be further defined and explained in subsequent drawings.

[0026] Embodiment 1

[0027] This embodiment mainly elaborates on the title of the portable unmanned aerial vehicle landing platform, as follows:

[0028] Split-type cylinder valve, referring to the attached Figures 1-4, including a valve body 10, a valve stem 20 disposed within the valve body 10, and a switch valve core 70 disposed on the valve stem 20. A knob 30 for driving the rotation of the valve stem 20 is provided on the valve stem 20. There is a gas passage within the valve body 10. The switch valve core 70 is lifted and lowered under the drive of the valve stem 20 to open or close the gas passage. The valve stem 20 includes an upper rod body 201 and a lower rod body 202. A square head 2011 is provided at the bottom end of the upper rod body 201. The lower rod body 202 is threadedly connected to the valve body 10 and a square groove 2021 is provided at its top. The square head 2011 and the square groove 2021 are of matching shapes. There is a spacing between the bottom end of the square head 2011 and the bottom of the square groove 2021. The switch valve core 70 is rotatably disposed at the bottom of the lower rod body 202. In this solution, by setting the valve stem 20 as a split structure, the knob 30 and the upper valve stem 20 can rotate at the original height, and the lifting of the lower valve stem 20 drives the lifting of the switch valve core 70 to achieve the opening and closing of the valve. At the same time, the lower valve core is rotatably connected to the lower rod body 202 to avoid its rotation, which can reduce unnecessary wear. The rotational cooperation between the switch valve core 70 and the lower rod body 202 can be achieved by interference connection with a bearing, or by providing a shaft rod at the top of the switch valve core 70, passing the shaft rod through the lower rod body 202 and threadedly connecting a limit nut. In this solution, the shaft rod extends into the square groove 2021 and connects the limit nut to hide the limit nut within the square groove 2021. At the same time, a space is reserved at the top of the limit nut for the lifting of the lower rod body 202 to prevent it from abutting against the bottom end of the upper rod body 201.

[0029] Valve body structure:

[0030] As Figures 1-2 shown, the valve body 10 includes a vertical portion 101 and a horizontal portion 102. The horizontal portion 102 has an air outlet interface, and the vertical portion 101 has an air inlet interface.

[0031] As Figure 2 shown, there is a slit at the vertical portion 101 and a concave switch groove is provided at the top of the slit. The valve core can abut within the switch groove to block it.

[0032] As Figure 2 shown, the gas passage includes an air inlet passage at the bottom of the vertical portion 101 and an air outlet passage within the horizontal portion 102. The air inlet passage and the air outlet passage are connected and form a 90-degree angle.

[0033] Safety valve part:

[0034] As Figure 2 shown, a safety valve core 80 and a spring 90 are provided within the air outlet passage and an annular step 1021 for the safety valve to abut is provided inside. The width of the safety valve core 80 is smaller than the diameter of the air outlet passage. The spring 90 applies an elastic force to the safety valve core 80 to make the safety valve core 80 abut against the annular step 1021 to block the through hole in the middle of the annular step 1021.

[0035] As Figure 2 shown, internal threads and external threads for connection are provided at both the end of the horizontal part 102 and the bottom end of the vertical part 101. After the safety valve is set, it needs to be used in cooperation with a pressure reducing valve. When the pressure reducing valve is installed at the internal thread of the horizontal part 102, the safety valve core 80 will be pushed open. When the pressure reducing valve is not installed, the safety valve core 80 is always in a closed state.

[0036] Sealing part:

[0037] As Figure 2 shown, a sealing ring 60 for sealing with the valve body 10 is embedded on the upper rod body 201. There is a sealing step 1011 inside the valve body 10. The lower rod body 202 is threadedly connected above the sealing step 1011 and the bottom end of the lower rod body 202 is located below the sealing step 1011. The bottom of the switch valve core 70 has a plug, and the top surface of the plug has a abutting plane. When the switch valve core 70 rises, the abutting plane abuts against the step surface of the sealing step 1011 to form a seal.

[0038] Preferably, an annular elastic sealing washer is provided on the top surface of the plug.

[0039] Knob 30 installation structure:

[0040] As Figure 2 and 4 shown, an internal thread is provided at the top of the vertical part 101 of the valve body 10 and an installation seat body 40 is threadedly connected. There is an installation hole in the middle of the installation seat body 40 and the upper rod body 201 is rotatably connected to the installation hole.

[0041] As Figure 2 shown, a press-fitting step is provided on the upper rod body 201. The knob 30 is sleeved above the press-fitting step and is tightly fixed by a pressing ring 50 threadedly connected to the top of the upper rod body 201.

[0042] The above has introduced in detail the title of the split gas cylinder valve provided by the present utility model. Specific examples are used in this article to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the present utility model and its core idea. It should be pointed out that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and modifications can still be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. Split-type cylinder valve, comprising a valve body, a valve stem disposed within the valve body, and a switch valve core disposed on the valve stem. A knob for driving the valve stem to rotate is provided on the valve stem. A gas passage is provided within the valve body. The switch valve core moves up and down under the drive of the valve stem to open or close the gas passage, characterized in that, The valve stem includes an upper rod body and a lower rod body. A square head is provided at the bottom end of the upper rod body. The lower rod body is threadedly connected to the valve body and has a square groove at its top. The square head matches the shape of the square groove, and there is a spacing between the bottom end of the square head and the bottom of the square groove. The on-off valve core is rotatably arranged at the bottom of the lower rod body.

2. The split gas cylinder valve according to claim 1, characterized in that, The valve body includes a vertical part and a horizontal part. The horizontal part has an air outlet interface, and the vertical part has an air inlet interface.

3. The split-type cylinder valve according to claim 2, characterized in that, A slit is provided at the vertical part, and a downward concave switch groove is provided at the top of the slit. The valve core can be abutted against the inside of the switch groove to block it.

4. The split-type cylinder valve according to claim 2, wherein, The gas passage includes an air inlet passage at the bottom of the vertical part and an air outlet passage inside the horizontal part. The air inlet passage and the air outlet passage are connected and form a 90-degree angle.

5. The split-type cylinder valve according to claim 4, wherein A safety valve core and a spring are provided in the air outlet passage, and an annular step for the safety valve to abut against is provided inside it. The width of the safety valve core is smaller than the diameter of the air outlet passage. The spring applies an elastic force to the safety valve core to make the safety valve core abut against the annular step to block the through hole in the middle of the annular step.

6. The split-type cylinder valve according to claim 2, characterized in that, Internal threads and external threads for connection are provided at both the end of the horizontal part and the bottom end of the vertical part.

7. The split-type cylinder valve according to claim 1, characterized in that, A sealing ring that forms a seal with the valve body is embedded on the upper rod body. There is a sealing step inside the valve body. The lower rod body is threadedly connected above the sealing step, and the bottom end of the lower rod body is located below the sealing step. The bottom of the on-off valve core has a plug. The top surface of the plug has an abutting plane. When the on-off valve core rises, the abutting plane abuts against the step surface of the sealing step to form a seal.

8. The split gas cylinder valve according to claim 7, characterized in that, An annular elastic sealing washer is provided on the top surface of the plug.

9. The split-type cylinder valve according to claim 2, characterized in that, Internal threads are provided at the top of the vertical part of the valve body and are threadedly connected to a mounting seat body. A mounting hole is provided in the middle of the mounting seat body, and the upper rod body is rotatably connected to the mounting hole.

10. The split-type cylinder valve according to claim 9, characterized in that, A press-fitting step is provided on the upper rod body. The knob is sleeved above the press-fitting step and is tightly fixed by a press ring threadedly connected to the top of the upper rod body.

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