Anti-drop gas valve

Abstract

The invention discloses an anti-falling gas valve. The anti-falling gas valve comprises a valve body, a valve cover, a shell of an electric actuating mechanism and a valve bonnet, the valve cover is arranged on the valve body and is in interference fit with the valve body, the valve bonnet is detachably installed on the shell, an elastic piece is arranged on the shell, a sliding groove and a clamping groove are formed in the valve cover, the tail end of the sliding groove is communicated with the clamping groove, and the clamping groove is communicated with the elastic piece. The elastic piece slides into the clamping groove through the sliding groove, and a first guiding inclined face is arranged at an inlet of the sliding groove and used for guiding the elastic piece to enable the elastic piece to be gradually compressed and bent. When the elastic piece is located in the sliding groove, the elastic piece is compressed and bent. When the elastic piece is located in the clamping groove, the elastic piece is limited in the clamping groove. The anti-falling gas valve is convenient to assemble, and screws do not need to be screwed.

Description

Technical Field

[0001] The invention relates to the technical field of gas solenoid valves, in particular to an anti-dropout gas valve. Background Art

[0002] The valve cover and valve body of the gas solenoid valve are usually fixed with screws, and the housing and valve cover of the electric actuator are also usually fixed with screws. Although this method can fix the valve cover and valve body as well as the housing and valve cover, it is troublesome to operate and requires workers to screw. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an anti-dropping gas valve which is convenient for installing a valve body, a valve cover and a shell.

[0004] In order to solve the above problems, the present invention provides an anti-dropout gas valve, which includes a valve body, a valve cover, a shell of an electric actuator and a valve cap, the valve cover is arranged on the valve body and the valve cover and the valve body are interference fit, the valve cap is detachably mounted on the shell, the shell is provided with a spring sheet, the valve cover is provided with a slide groove and a clamping groove, the end of the slide groove is communicated with the clamping groove, the spring sheet slides into the clamping groove through the slide groove, and a first guiding inclined surface is provided at the entrance of the slide groove, the first guiding inclined surface is used to guide the spring sheet so that the spring sheet is gradually compressed and bent; when the spring sheet is located in the slide groove, the spring sheet is compressed and bent; when the spring sheet is located in the clamping groove, the spring sheet is confined in the clamping groove.

[0005] Furthermore, a sealing ring is provided between the valve body and the valve cover.

[0006] Furthermore, a sealing step is provided on the valve body, a sealing stop ring adapted to the sealing step is provided at the lower end of the valve cover, the sealing ring is installed on the sealing stop ring, and the sealing ring is located between the sealing stop ring and the sealing step.

[0007] Furthermore, the valve body is provided with a mounting step, the valve cover is provided with an assembly portion adapted to the mounting step, and the assembly portion is interference fit with the mounting step.

[0008] Furthermore, the spring piece is obliquely arranged on the first component, and an inclined surface adapted to the spring piece is arranged on the bottom of the slot.

[0009] Furthermore, the front side wall of the slot is tilted, the inner end of the front side wall is close to the slide slot, the outer end of the front side wall is away from the slide slot, and the end face of the front end of the spring is tilted and adapted to the front side wall of the slot.

[0010] Furthermore, the thickness of the front end of the spring piece is smaller than the thickness of the rear end of the spring piece.

[0011] Furthermore, an avoidance groove is provided on the shell, and the avoidance groove is located at the connection between the spring sheet and the shell, and the avoidance groove is close to the front end side of the spring sheet.

[0012] Furthermore, a locking groove is provided on the shell, and a locking protrusion is provided on the valve cap. The locking protrusion is located in the locking groove, and the locking protrusion can slide out of the locking groove to release the connection between the valve cap and the shell.

[0013] Furthermore, the locking groove is L-shaped.

[0014] The valve cover and valve body of the anti-drop gas valve of the present invention are connected by interference fit, and the installation only needs to be pressed by equipment, which reduces manual operation and does not require manual screwing. The spring piece is inserted into the slot, and the shell or the valve cover is rotated to slide the spring piece into the slot along the slide groove. The spring piece is stuck in the slot and cannot be pulled out, which can effectively prevent the shell and the valve cover from falling off. If the connection between the shell and the valve cover is to be disassembled, it can only be violently destroyed and disassembled. No screws are required for installation, and only insertion and rotation are required. The installation is convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a preferred embodiment of the anti-fall-off gas valve of the present invention.

[0016] Figure 2 It is a cross-sectional view of the anti-fall-off gas valve of the present invention.

[0017] Figure 3 It is a structural diagram of the valve body.

[0018] Figure 4 yes Figure 2 A partial enlarged view of middle A.

[0019] Figure 5 It is a schematic diagram of the structure in which the spring is stuck in the slot.

[0020] Figure 6 yes Figure 5 A partial enlarged view of B.

[0021] Figure 7 It is a structural diagram of the valve cover.

[0022] Figure 8 It is a schematic diagram of the structure of the shrapnel.

[0023] Fig. 9 It is a structural diagram of the connection between the valve cover and the housing.

[0024] Fig.10 It is a structural diagram of the valve cover.

[0025] Fig.11 It is a structural schematic diagram of the locking block.

[0026] The meanings of the symbols in the accompanying drawings are:

[0027] Valve body 1, installation step 11, sealing step 12, valve cover 2, assembly part 21, sealing ring 22, slide groove 23, first guide slope 230, vertical section 231, horizontal section 232, second guide slope 233, slot 24, front side wall 241, rear side wall 242, shell 3, spring piece 31, avoidance groove 32, locking groove 33, vertical groove 331, horizontal groove 332, valve cap 4, locking protrusion 41, sealing ring 5. DETAILED DESCRIPTION

[0028] The present invention will be further described below in conjunction with the accompanying drawings.

[0029] Since the operating principle of the gas valve is not designed, only the valve body, valve cover, housing of the electric actuator and the valve cap connection structure are involved, so the valve, valve stem and other components are not shown in the figure.

[0030] like Figure 1 and Figure 2 As shown, the preferred embodiment of the anti-drop gas valve of the present invention includes a valve body 1, a valve cover 2, a housing 3 of an electric actuator and a valve cap 4. The valve cover 2 is installed on the valve body 1 by interference fit, ensuring that the valve cover 2 and the valve body 1 will not fall off after installation. The connection between the valve cover 2 and the valve body 1 can only be disassembled under the condition of a large external force, and the connection stability is good; at the same time, the installation does not require manual screwing, and the installation only needs to be tightened by equipment, which reduces manual operation and makes the installation of the valve cover 2 and the valve body 1 more convenient. A sealing ring 5 is provided between the valve body 1 and the valve cover 2 to ensure the sealing effect between the valve cover 2 and the valve body 1. The lower end of the housing 3 is clamped and fixed on the valve cover 2, and the valve cap 4 is detachably installed on the upper end of the housing 3.

[0031] like Figures 3 to 8 As shown, the valve body 1 is provided with an installation step 11 and a sealing step 12, wherein the installation step 11 is used to install the valve cover 2, and the sealing step 12 is used to accommodate the sealing ring 5. The installation step 11 has a first positioning plane arranged horizontally and a first assembly surface arranged vertically, wherein the first positioning plane and the first assembly surface are connected; the first positioning plane is used to locate the installation position of the valve cover 2; the first assembly surface is used to have an interference fit with the side wall of the valve cover 2. The first positioning plane is recessed downward to form a sealing step 12, and the sealing step 12 is used to accommodate the sealing ring 5. The connection between the sealing step 12 and the first positioning plane is smoothly transitioned, so as to facilitate the introduction of the sealing ring 5 into the sealing step 12 when assembling the valve cover 2.

[0032] The valve cover 2 is provided with an assembly portion 21 adapted to the installation step 11, and the assembly portion 21 cooperates with the installation step 11 to effectively define the installation position of the valve cover 2. The assembly portion 21 has a second assembly surface arranged vertically and a second positioning plane arranged horizontally, and the second positioning plane and the second assembly surface are connected. The second assembly surface conflicts with the first assembly surface, and the second positioning plane conflicts with the first positioning plane. The second positioning plane protrudes downward to form a sealing stop ring 22, that is, a sealing stop ring 22 is provided at the lower end of the valve cover 2, and the sealing stop ring 22 is used to install the sealing ring 5. When the valve cover 2 is installed on the valve body 1 by interference fit, the sealing ring 5 is located between the sealing stop ring 22 and the sealing step 12, and the sealing ring 5 is squeezed and deformed, ensuring that the sealing effect of the sealing ring 5 is good.

[0033] The lower end of the housing 3 is provided with the elastic sheet 31, and the side wall of the valve cover 2 is provided with a slide groove 23 and a clamping groove 24, the slide groove 23 and the clamping groove 24 are located above the second assembly surface, the elastic sheet 31 is adapted to the slide groove 23 and the clamping groove 24, the end of the slide groove 23 is connected with the clamping groove 24, and the elastic sheet 31 slides into the clamping groove 24 through the slide groove 23, thereby fixing the housing 3 of the electric actuator and the valve cover 2. The elastic sheet 31 is located on the inner side wall of the housing 3, so that after the assembly is completed, the entrance of the slide groove 23 will be hidden, and the entrance position of the slide groove 23 cannot be observed. Generally speaking, there are two slide grooves 23, clamping grooves 24 and elastic sheets 31, and the elastic sheets 31 are arranged one by one with the slide grooves 23 and the clamping grooves 24, that is, one elastic sheet 31 corresponds to one slide groove 23 and one clamping groove 24, the elastic sheets 31 are evenly distributed on the housing 3, and the slide grooves 23 and the clamping grooves 24 are also evenly distributed on the valve cover 2. Of course, in other embodiments, the slide groove 23, the clamping groove 24 and the spring piece 31 can be provided in greater numbers according to the requirements. The entrance end of the slide groove 23 is the front end, the end of the slide groove 23 connected to the clamping groove 24 is the rear end, and the spring piece 31 is used as a reference. The end of the spring piece 31 facing the slide groove 23 when in the clamping groove 24 is the front end, and the end of the spring piece 31 opposite to the slide groove 23 is the rear end.

[0034] The entrance of the slide groove 23 is located at one end face of the valve cover 2, that is, the entrance of the slide groove 23 starts from a certain end face of the valve cover 2, and the end face can be a step face of the valve cover 2, or an end face of the end head, to ensure that the elastic sheet 31 can enter the slide groove 23. A first guiding slope 230 is provided at the entrance of the slide groove 23, and the first guiding slope 230 is used to guide the elastic sheet 31, so as to facilitate guiding the elastic sheet 31 into the slide groove 23, so that the elastic sheet 31 changes from a normal state to a bent and deformed state, and can smoothly slide the elastic sheet 31 into the slide groove 23, and the assembly is not time-consuming and labor-intensive. The slide groove 23 is L-shaped, that is, the slide groove 23 includes a vertical section 231 and a horizontal section 232 connected to the lower end of the vertical section 231, and the upper end of the vertical section 231 is used as the entrance of the slide groove 23. The second guiding slope 233 is provided at the connection between the vertical section 231 and the horizontal section 232, so as to guide the spring piece 31 to change from vertical movement to horizontal movement. Of course, the chute 23 can also be set to other shapes according to requirements, such as the chute 23 is spiral.

[0035] The depth of the slot 24 is greater than the depth of the slide slot 23. The slot 24 has a front side wall 241 and a rear side wall 242. When the spring piece 31 is located in the slot 24, the spring piece 31 is restricted in the slot 24, that is, the front end of the spring piece 31 is restricted by the front side wall 241 of the slot 24, and the rear end of the spring piece 31 is restricted by the rear side wall 242 of the slot 24; in this way, the spring piece 31 can be stuck in the slot 24, and the spring piece 31 cannot be rotated out of the slot 24 even if it rotates in the opposite direction. The front side wall 241 of the slot 24 is tilted, the inner end of the front side wall 241 is close to the slide slot 23, the outer end of the front side wall 241 is far away from the slide slot 23, the front end face of the spring sheet 31 is tilted, the front end face of the spring sheet 31 is matched with the front side wall 241 of the slot 24, so as to form a locking structure, even if the front end of the spring sheet 31 is rotated in the opposite direction, it will only be stuck in the slot 24, further enhancing the stability of the fixation. The inner end of the front side wall 241 is the end of the front side wall 241 of the slot 24 close to the center of the valve cover 2, and the outer end of the front side wall 241 is the end of the front side wall 241 of the slot 24 close to the outer wall of the valve cover 2. The thickness of the front end of the spring sheet 31 is less than the thickness of the rear end of the spring sheet 31, so that the spring sheet 31 can be better inserted between the front side wall 241 of the slot 24 and the bottom of the slot 24.

[0036] The spring piece 31 is tiltedly arranged on the housing 3, and the bottom of the slot 24 is provided with an inclined surface adapted to the spring piece 31, which effectively prevents the front end of the spring piece 31 from falling off from the slot 24. It should be known that the spring piece 31 has a certain elasticity, and the spring piece 31 can be bent and deformed under the action of external force. When the spring piece 31 is located in the slide slot 23, the spring piece 31 is compressed and bent, so that the spring piece 31 can enter the slide slot 23 and slide in the slide slot 23 without changing the inner diameter of the housing 3.

[0037] When installing the housing 3 and the valve cover 2, align the spring piece 31 on the housing 3 with the entrance of the slide slot 23, and then insert the spring piece 31 into the slide slot 23. Under the guidance of the first guide slope 230, the spring piece 31 is smoothly inserted into the slide slot 23 and bent and deformed to adapt to the reduction of the distance between the spring piece 31 and the bottom of the slide slot 23. Then rotate the housing 3 or the valve cover 2 and the valve body 1 to make the spring piece 31 slide into the slot 24 along the slide slot 23. After the spring piece 31 slides into the slot 24, the spring piece 31 is restored, and the spring piece 31 is confined in the slot 24 to complete the installation. During installation, it only needs to be inserted and then rotated. The installation is convenient and quick, and no screws are required. After the installation is completed, it will not fall off. The connection between the housing 3 and the valve cover 2 cannot be disassembled, and the connection between the housing 3 and the valve cover 2 can only be disassembled by violent disassembly.

[0038] The shell 3 is provided with an avoidance groove 32, which is located at the connection between the spring piece 31 and the shell 3, and the avoidance groove 32 is close to the front end side of the spring piece 31, so as to reduce the restriction on the spring piece 31, increase the space for deformation of the spring piece 31, improve the bending degree of deformation of the spring piece 31, and enable it to slide better in the slide groove 23. At the same time, when the spring piece 31 is inserted into the slide groove 23, the force required by the assembler is also reduced, thereby reducing the difficulty of assembly.

[0039] like Figures 9 to 11 As shown, the upper end of the housing 3 is provided with a locking groove 33, the locking groove 33 is located on the outer wall of the housing 3, and the valve cap 4 is clamped in the locking groove 33. The entrance of the locking groove 33 is located on the end surface of the upper end of the housing 3, so that the valve cap 4 is convenient for clamping into the locking groove 33. The locking grooves 33 are usually two, and the two locking grooves 33 are evenly distributed on the upper end of the housing 3. In other embodiments, the locking grooves 33 can also be three or more, and the number of the locking grooves 33 is set according to needs.

[0040] The inner wall of the valve bonnet 4 is provided with a locking protrusion 41, and the locking protrusion 41 cooperates with the locking groove 33 to detachably mount the valve bonnet 4 on the housing 3. The locking groove 33 is L-shaped, specifically, the locking groove 33 has a vertical groove 331 and a horizontal groove 332, the vertical groove 331 is used to introduce the locking protrusion 41 into the horizontal groove 332, so that the locking protrusion 41 can slide into the horizontal groove 332 of the locking groove 33, and the horizontal groove 332 is used to limit the locking protrusion 41, and the locking protrusion 41 can only move horizontally in the horizontal groove 332, and cannot move up and down, so the locking protrusion 41 can be limited.

[0041] When installing the valve bonnet 4 and the housing 3, align the locking protrusion 41 with the entrance of the locking groove 33, and then insert the locking protrusion 41 into the horizontal groove 332 of the locking groove 33. Since the valve bonnet 4 is lighter than the housing 3, the valve bonnet 4 is usually rotated, and the housing 3 can also be rotated. The rotation can drive the locking protrusion 41 to slide in the horizontal groove 332 of the locking groove 33. In this way, the locking protrusion 41 is misaligned with the vertical groove 331, and the connection between the valve bonnet 4 and the housing 3 is realized, which can prevent the valve bonnet 4 from falling off from the housing 3. The connection between the valve bonnet 4 and the housing 3 can be removed by reverse operation, and a detachable connection is realized. The installation is convenient without screwing. The valve bonnet 4 and the housing 3 are set to be detachably connected, which is convenient for subsequent adjustment of the state of the valve stem of the valve.

[0042] The above are only implementation modes of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure made using the contents of the present invention's specification and drawings, directly or indirectly used in other related technical fields, are also within the patent protection scope of the present invention.

Claims

1. An anti-drop gas valve, characterized in that: It includes a valve body, a valve cover, a shell of an electric actuator and a valve cap, the valve cover is arranged on the valve body and the valve cover and the valve body are interference fit, the valve cap is detachably mounted on the shell, the shell is provided with a spring sheet, the valve cover is provided with a slide groove and a clamping groove, the end of the slide groove is connected with the clamping groove, the spring sheet slides into the clamping groove through the slide groove, and a first guiding slope is arranged at the entrance of the slide groove, the first guiding slope is used to guide the spring sheet so that the spring sheet is gradually compressed and bent; when the spring sheet is located in the slide groove, the spring sheet is compressed and bent; when the spring sheet is located in the clamping groove, the spring sheet is confined in the clamping groove.

2. The anti-drop gas valve according to claim 1, characterized in that: A sealing ring is arranged between the valve body and the valve cover.

3. The anti-drop gas valve according to claim 2, characterized in that: The valve body is provided with a sealing step, the lower end of the valve cover is provided with a sealing stop ring adapted to the sealing step, the sealing ring is installed on the sealing stop ring, and the sealing ring is located between the sealing stop ring and the sealing step.

4. The anti-drop gas valve according to claim 1, characterized in that: The valve body is provided with a mounting step, and the valve cover is provided with an assembly portion adapted to the mounting step, and the assembly portion is interference-fitted with the mounting step.

5. The anti-drop gas valve according to claim 1, characterized in that: The spring piece is arranged obliquely on the first component, and the bottom of the slot is provided with an inclined surface adapted to the spring piece.

6. The anti-drop gas valve according to claim 1, characterized in that: The front side wall of the slot is tilted, the inner end of the front side wall is close to the slide slot, the outer end of the front side wall is away from the slide slot, and the end face of the front end of the spring is tilted and matched with the front side wall of the slot.

7. The anti-drop gas valve according to claim 6, characterized in that: The thickness of the front end of the spring piece is smaller than the thickness of the rear end of the spring piece.

8. The anti-drop gas valve according to claim 1, characterized in that: The shell is provided with an escape groove, the escape groove is located at the connection between the spring sheet and the shell, and the escape groove is close to the front end side of the spring sheet.

9. The anti-drop gas valve according to claim 1, characterized in that: The housing is provided with a locking groove, and the valve cap is provided with a locking protrusion. The locking protrusion is located in the locking groove, and the locking protrusion can slide out of the locking groove to release the connection between the valve cap and the housing.

10. The anti-drop gas valve according to claim 9, characterized in that: The locking groove is L-shaped.

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