Side wheel straight valve

Abstract

The utility model discloses a side wheel straight valve which comprises a main valve body, an air flow channel is formed in the main valve body, an air inlet end and an air outlet end are arranged at the two ends of the main valve body respectively, the central axes of the air inlet end and the air outlet end coincide, and the side portion of the main valve body is provided with a cut-off cavity which forms a certain angle with the air flow channel. The cut-off assembly is arranged on the side portion of the main valve body, and the cut-off assembly comprises a cut-off core arranged in the cut-off cavity and a hand wheel connected with the outer end portion of the cut-off core; when the hand wheel rotates to drive the closure core, the closure core moves along the arrangement direction of the closure cavity after the closure core is acted by the hand wheel, and the air flow channel is in an open or closed state, the annular groove is formed in the periphery of the closure core, and in the process that the closure core is driven by the hand wheel in a rotating mode, the closure core is matched with the lock pin, so that the closure core can be opened or closed. And the moving distance of the intercepting core is limited within the width range of the annular groove, so that the intercepting core and the hand wheel are prevented from being separated from the main valve body due to excessive movement, and the use safety is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas valves, and particularly relates to a side-wheel straight valve. Background Art

[0002] A gas valve is a safety supporting device for gas pipeline projects. It is used to cut off, connect, and regulate the gas in the pipeline, and has good control characteristics and closing and sealing performance. It is widely used in various gas medium pipelines such as city gas, liquefied petroleum gas, natural gas, and oxygen.

[0003] The current gas valves all realize opening and closing through the self-closing function of the valve itself, that is, when an external pressure regulator is inserted into the valve, it will automatically open, and when the pressure regulator is pulled out, the valve will automatically close. Its potential safety hazard is that when a leakage occurs after the pressure regulator is inserted, it is necessary to pull out the pressure regulator in time to close the valve. However, there are often special situations where the inserted pressure regulator is not easy to pull out. At this time, the valve needs to have a faster and more reliable quick-closing switch.

[0004] Such as Figure 6 As shown, the Chinese patent with the application number CN202221917630.1 discloses a gas valve, which includes a valve body with a flow channel formed therein; a valve core installed on the valve body, and the front end is placed in the flow channel for opening or closing the flow channel; a handwheel installed at the rear end of the valve core for controlling the rotation of the valve core on the valve body; wherein, a first boss for inserting the handwheel is formed on the side wall of the valve body, and a convex edge extends outward from the outer side wall of the first boss; a clamping edge extending toward the center is formed at the lower end of the handwheel; when the handwheel rotates a set angle and the valve core is in the open state, the end face of the clamping edge is movably abutted against the end face of the convex edge.

[0005] The gas valve of the above technical solution adds a handwheel, which well solves this potential safety hazard. However, with further research by the applicant, it is found that due to the clamping edge and the convex edge being provided at the lower end of the handwheel in this technical solution, through the cooperation of the convex edge and the clamping edge, the handwheel cannot be separated from the valve body, ensuring the safety of use. However, limited by its structure, it lacks a limiting function, and the handwheel is prone to be separated from the main valve body during the rotation to drive the throttling core to move. Content of the Utility Model

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A side-wheel straight valve includes:

[0008] A main valve body with an air flow channel formed inside, and an air inlet end and an air outlet end with coincident central axes are respectively opened at both ends. A throttling cavity at a certain angle to the air flow channel is arranged on the side part of the main valve body;

[0009] The intercepting component is arranged on the side of the main valve body. The intercepting component includes an intercepting core placed in the intercepting cavity and a handwheel connected to the outer end of the intercepting core.

[0010] After the intercepting core is acted on by the handwheel, the intercepting core moves along the direction of the intercepting cavity, and the air flow channel is in an open or closed state.

[0011] An annular groove with a width of L1 is formed in the circumferential direction of the intercepting core, and a guiding channel is formed on the circumferential wall of the intercepting cavity around the central axis of the intercepting core; and

[0012] A pin hole for inserting a locking pin.

[0013] The locking pin is located between the guiding channel and the annular groove. The moving distance of the intercepting core in the intercepting cavity is L2, and L2 ≤ L1.

[0014] Furthermore, the locking pin is a square pin.

[0015] Furthermore, an O-ring is sleeved on the outer circumference of the intercepting core.

[0016] Furthermore, the intercepting core is threadedly connected to the main valve body.

[0017] Furthermore, a valve body core threadedly connected to the main valve body is arranged inside the main valve body and close to the air outlet end. A core spring sleeve, a valve core spring, and a valve core rod cooperating with the air outlet end are sequentially sleeved inside the valve body core.

[0018] Furthermore, a plurality of support bars are distributed in the circumferential direction of the core spring sleeve, and the support bars extend axially downward along the upper end face of the core spring sleeve.

[0019] Furthermore, when the air outlet end cooperates with an external pressure regulating device, the valve core rod moves axially along the core spring sleeve, the head of the valve core rod moves away from or close to the air outlet end, and the air flow channel is in an open or closed state.

[0020] Furthermore, a quick connector is arranged on the side of the main valve body where the air outlet end is located.

[0021] Furthermore, a valve port sealing ring is arranged at the air outlet end.

[0022] Furthermore, an air inlet pipe is connected to the air inlet end of the main valve body, and the air inlet pipe is communicated with the air flow channel.

[0023] Compared with the prior art, the utility model has the following beneficial effects:

[0024] The utility model limits the moving distance of the intercepting core within the width range of the annular groove by arranging an annular groove on the outer periphery of the intercepting core and cooperating with a locking pin during the process of the intercepting core being driven by the handwheel rotation, thus avoiding excessive movement of the intercepting core and the handwheel and disengaging from the main valve body, and ensuring the safety of use.

[0025] During the placement process of the locking pin, under the action of the guiding channel, the locking pin surrounds the outer periphery of the intercepting core and is located between the guiding channel and the annular groove. On the one hand, it realizes the limitation of the excessive movement of the intercepting core, and on the other hand, it forms the effect of preventing disassembly of the intercepting component.

[0026] Since a handwheel type intercepting component is arranged on the side of the main valve body, when it is necessary to disconnect the air outlet end from the external pressure regulating device or the gas using device, the intercepting component can be pre-operated, the handwheel can be turned, and the intercepting core head can be used to block the air flow channel. In this way, the occurrence of gas leakage can be further avoided, and the safety is better. Description of the Drawings

[0027] Figure 1 is the overall structural schematic diagram of an embodiment of a side-wheel straight valve of the utility model;

[0028] Figure 2 is the exploded structural schematic diagram of an embodiment of a side-wheel straight valve of the utility model;

[0029] Figure 3 is the top view structural schematic diagram of an embodiment of a side-wheel straight valve of the utility model;

[0030] Figure 4 is Figure 3 the sectional structural schematic diagram of A-A in

[0031] Figure 5 is the structural schematic diagram of the intercepting component in the embodiment of the utility model;

[0032] Figure 6 is the structural schematic diagram of an existing gas valve;

[0033] The reference numerals in the accompanying drawings of the specification include:

[0034] Main valve body 1, air flow channel 10, air outlet end 12, air inlet end 13, intercepting cavity 14, guiding channel 140, pin hole 141, inlet pipe 2, intercepting component 3, intercepting core 30, annular groove 300, O-ring 301, handwheel 31, locking pin 4, valve body core 7, core spring sleeve 8, support strip 80, valve core spring 90, valve core rod 91, quick connector 92, valve port sealing ring 93. Detailed Embodiment

[0035] In order to enable those skilled in the art to better understand the present utility model, the technical solutions of the present utility model will be further described below in conjunction with the drawings and embodiments.

[0036] Among them, the attached drawings are only for illustrative purposes, showing only schematic diagrams rather than actual physical diagrams, and should not be construed as a limitation on this patent; in order to better illustrate the embodiments of the present invention, some components in the attached drawings will be omitted, enlarged or reduced, which do not represent the dimensions of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the attached drawings may be omitted. The same or similar reference numerals in the attached drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if terms such as "upper", "lower", "left", "right", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the attached drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms used to describe the positional relationship in the attached drawings are only for illustrative purposes and should not be construed as a limitation on this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0037] As Figure 1 - Figure 5 shown, a side-wheel straight valve of the present invention includes a main valve body 1 and a throttling assembly 3;

[0038] Among them, an air flow channel 10 is formed inside the main valve body 1, and an air inlet end 13 and an air outlet end 12 with coincident central axes are respectively provided at both ends. A throttling cavity 14 is provided on the side of the main valve body 1 at an angle with the air flow channel 10;

[0039] The throttling assembly 3 is arranged on the side of the main valve body 1. The throttling assembly 3 includes a throttling core 30 placed in the throttling cavity 14 and a handwheel 31 connected to the outer end of the throttling core 30;

[0040] After the throttling core 30 is acted on by the handwheel 31, the throttling core 30 moves along the direction of the throttling cavity 14, and the air flow channel 10 is in an open or closed state;

[0041] An annular groove 300 with a width of L1 is provided on the circumferential direction of the throttling core 30. A guiding channel 140 and a pin hole 141 are provided on the circumferential wall of the throttling cavity 14 around the central axis of the throttling core 30. The pin hole 141 is for inserting a locking pin 4;

[0042] The locking pin 4 is between the guiding channel 140 and the annular groove 300. The moving distance of the throttling core 30 in the throttling cavity 14 is L2, and L2 ≤ L1.

[0043] In the present utility model, an annular groove 300 is provided on the outer periphery of the intercepting core 30. During the process of the intercepting core 30 being rotated and driven by the handwheel 31, through the cooperation with the locking pin 4, the moving distance of the intercepting core 30 is limited within the width range of the annular groove 300, avoiding excessive movement of the intercepting core 30 and the handwheel 31 and disengaging from the main valve body 1, thus ensuring the safety of use.

[0044] Specifically, the cross-section of the locking pin 4 is square. The locking pin 4 is made of metal material with moderate hardness. One end of the locking pin 4 is aligned with the pin hole 141, and by using a tool to strike, the locking pin 4 is inserted into the guiding channel 140. The locking pin 4 contacts the inner wall of the guiding channel 140, causing the locking pin 4 to deform during the insertion process and bend around the outer periphery of the intercepting core 30. Specifically, the locking pin 4 is located between the guiding channel 140 and the annular groove 300.

[0045] During the placement process of the locking pin 4, under the action of the guiding channel 140, the locking pin 4 surrounds the outer periphery of the intercepting core 30 and is located between the guiding channel 140 and the annular groove 300. On the one hand, it realizes the limitation of excessive movement of the intercepting core 30. On the other hand, it forms the effect of preventing disassembly of the intercepting assembly 3.

[0046] For the existing intercepting assembly 3 with a structure similar to that of the locking pin 4, a plug pin structure is adopted to limit the movement of the intercepting core 30. Due to the plug pin structure, it is easily damaged by external forces and loses its original limiting effect. For example, after being polished or the plug pin being pulled out, the intercepting core 30 and the handwheel 31 lose the limit protection and thus disengage from the main valve body 1.

[0047] In this embodiment, the locking pin 4 finally surrounds the outer periphery of the intercepting core 30 through the cooperation of the guiding channel 140 and the annular groove 300. Such a structure will not be damaged in the traditional disassembly method. Once the locking pin 4 is inserted, it cannot be taken out.

[0048] As Figure 4 shown, in order to increase the tightness, an O-ring 301 is sleeved on the outer periphery of the intercepting core 30.

[0049] In addition, the intercepting core 30 is threadedly connected to the main valve body 1.

[0050] By installing a self-closing structure in the main valve body 1, when gas leaks and the external pressure regulating device disengages from the air outlet end 12, the valve core rod 91 is driven by the valve core spring 90 to return to the initial position, and the valve core rod 91 blocks the air flow channel 10 to prevent gas from continuing to leak, ensuring the safety of use.

[0051] Specifically, a valve body core 7 threadedly connected to the main valve body 1 is disposed inside the main valve body 1 and near one side of the air outlet end 12. Inside the valve body core 7, a core spring sleeve 8, a valve core spring 90, and a valve core rod 91 that cooperates with the air outlet end 12 are sequentially sleeved. The above components are combined into a self-closing structure. When the air outlet end 12 cooperates with an external pressure regulating device, the valve core rod 91 axially moves along the core spring sleeve 8, and the head of the valve core rod 91 moves away from or close to the air outlet end 12, and the air flow channel 10 is in an open or closed state.

[0052] Among them, a quick connector 92 is disposed on one side of the main valve body 1 at the air outlet end 12. The air outlet end 12 of the present utility model can, after being quickly connected to an external regulating device, such as a pressure reducing valve, move the valve core rod 91 axially along the core spring sleeve 8 and cooperate with the valve body core 7 to open the air flow channel 10. During the disconnection process from an external gas-using device, under the action of the valve core spring 90, the valve core rod 91 can be pushed to move, and the air outlet end 12 can be quickly closed to avoid gas leakage.

[0053] Since a shut-off assembly 3 in the form of a handwheel 31 is disposed on the side of the main valve body 1, when the air outlet end 12 needs to be disconnected from an external pressure regulating device or a gas-using device, the shut-off assembly 3 can be pre-operated, the handwheel 31 can be turned, and the head of the shut-off core 30 can be used to block the air flow channel 10. In this way, the occurrence of gas leakage can be further avoided, and the safety is better.

[0054] The central axes of the air inlet end 13 and the air outlet end 12 in the main valve body coincide, making the entire valve form a straight valve shape.

[0055] A plurality of support bars 80 are circumferentially distributed on the core spring sleeve 8, and the support bars 80 axially extend downward along the upper end surface of the core spring sleeve 8.

[0056] In addition, a valve port sealing ring 93 is disposed at the air outlet end 12.

[0057] As Figure 4 shown, an air inlet pipe 2 is connected to the air inlet end 13 of the main valve body 1, and the air inlet pipe 2 is communicated with the air flow channel 10. The material of the air inlet pipe 2 can be selected as a plastic part.

[0058] One end of the air inlet pipe 2 is connected to a gas tank, and the other end of the air inlet pipe 2 is threadedly connected to the main valve body 1.

[0059] The above are only the embodiments of the present utility model. Specific structures and common knowledge such as characteristics that are well-known in the art are not described in detail herein. Those of ordinary skill in the art know all the general technical knowledge in the technical field to which the utility model belongs before the application date or the priority date, can know all the existing technologies in this field, and have the ability to apply conventional experimental means before this date. Those of ordinary skill in the art can, under the inspiration given in this application, combine their own abilities to improve and implement this solution. Some typical well-known structures or well-known methods should not become obstacles for those of ordinary skill in the art to implement this application. It should be noted that for those skilled in the art, without departing from the structure of the present utility model, several deformations and improvements can still be made, and these should also be regarded as the protection scope of the present utility model, and these will not affect the implementation effect of the present utility model and the practicality of the patent.

Claims

1. A side-wheel straight valve, characterized in that, Comprising: A main valve body, which has an air flow channel formed inside, and an air inlet end and an air outlet end with coincident central axes are respectively provided at both ends. A throttling cavity is provided on the side of the main valve body at an angle with the air flow channel. A throttling assembly, which is arranged on the side of the main valve body. The throttling assembly includes a throttling core placed in the throttling cavity and a handwheel connected to the outer end of the throttling core. After the throttling core is acted on by the handwheel, the throttling core moves along the direction of the throttling cavity, and the air flow channel is in an open or closed state. An annular groove with a width of L1 is provided on the circumference of the throttling core, and a guiding channel is provided on the circumferential wall of the throttling cavity around the central axis of the throttling core. And A pin hole for inserting a locking pin. The locking pin is between the guiding channel and the annular groove. The moving distance of the throttling core in the throttling cavity is L2, and L2 ≤ L1.

2. The side-wheel straight valve according to claim 1, wherein: The locking pin is a square pin.

3. The side-wheel straight valve according to claim 1 or 2, characterized in that: An O-ring is sleeved on the outer circumference of the throttling core.

4. The side-wheel straight valve according to claim 3, characterized in that: The throttling core is threadedly connected to the main valve body.

5. A side-wheel straight valve according to claim 1 or 2 or 4, characterized in that: A valve body core threadedly connected to the main valve body is arranged inside the main valve body and near the air outlet end side. A core spring sleeve, a valve core spring and a valve core rod cooperating with the air outlet end are sequentially sleeved inside the valve body core.

6. The side-wheel straight valve according to claim 5, wherein: A plurality of support bars are circumferentially distributed on the core spring sleeve, and the support bars axially extend downward along the upper end surface of the core spring sleeve.

7. The side-wheel straight valve according to claim 6, characterized in that: When the air outlet end cooperates with an external pressure regulating device, the valve core rod moves axially along the core spring sleeve, the head of the valve core rod moves away from or close to the air outlet end, and the air flow channel is in an open or closed state.

8. A side-wheel straight valve according to claim 1 or 2 or 4 or 6 or 7, characterized in that: A quick connector is provided on the side of the main valve body where the air outlet end is located.

9. The side-wheel straight valve according to claim 8, wherein: A valve port sealing ring is provided at the air outlet end.

10. A side-wheel straight valve according to claim 9, characterized in that: An intake pipe is connected to the intake end of the main valve body, and the intake pipe is communicated with the air flow channel.

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