Stainless steel corrugated pipe provided with self-closing valve and used for connecting gas appliance

Abstract

The utility model discloses a stainless steel corrugated pipe with a self-closing valve for gas appliance connection, which comprises a corrugated pipe, one end of the corrugated pipe is connected with the self-closing valve, the self-closing valve comprises a valve body, the valve body is provided with a gas inlet, a gas outlet and an inner cavity, the gas outlet is provided with a ball valve, a fixing plate is arranged in the gas inlet, and the inner cavity is provided with an inner cavity. The valve body is provided with a fixing plate, the fixing plate is provided with an overflowing hole, the valve body is provided with an adjusting assembly used for opening and closing the overflowing hole or adjusting the flow of the overflowing hole, and the adjusting assembly comprises a throttling block, a connecting rod, an adjusting rod and a connecting block. When the sealing plate is closed, the connecting block is driven to move, the first slope is matched with the second slope, the abutting end is matched with the abutting face in the middle, at the moment, a large-flow mode is adjusted to be in a small-flow mode, and when the abutting end is matched with the abutting face on the side away from the sealing plate, the small-flow mode is adjusted to be in a closed state.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of bellows, especially to a stainless steel bellows for connecting gas appliances with a self-closing valve. BACKGROUND

[0002] Gas is a widely used gaseous fuel. Due to the flammable, explosive and toxic properties of gas, if gas leaks, it can easily cause a major safety accident. Therefore, it is necessary to ensure that the gas entering the gas appliance is at a normal pressure so that it can burn fully and stably. Currently, in order to meet the requirements of the national indoor gas use standard, an indoor gas user must install a gas self-closing valve.

[0003] After searching, a connecting rod type gas pipeline self-closing valve is provided by Chinese utility model patent (authorized publication number: CN220168653U), which includes a valve body connected to the inner cavity of the gas pipeline, a transmission sealing assembly for making the valve body cavity pass or cut off gas, a slider provided in the valve body cavity for making the transmission sealing assembly act, an action assembly for making the slider move vertically to the direction of the gas pipeline under the action of external force or when the gas pipeline cavity pressure is less than or greater than the set value;

[0004] The transmission sealing assembly includes a valve rod provided in the valve body cavity and reciprocating along the direction of the gas pipeline, and a sealing block fixed on the valve rod and adapted to the valve body cavity, so that when the valve rod reciprocates along the direction of the gas pipeline, the sealing block seals or conducts the gas pipeline; the slider and the valve rod are hinged with a connecting rod.

[0005] The above-mentioned prior art simplifies the structure of the valve body, reduces the production cost, and makes the transmission more stable and precise, which is suitable for all gas pipelines that need to install a self-closing valve.

[0006] However, the above-mentioned prior art has the defects that the gas pipeline only has the functions of opening and closing, lacks the function of adjusting flow, and has a relatively complex structure, so it is urgent to improve this shortcoming. UTILITY MODEL CONTENTS

[0007] The utility model aims at the above-mentioned problems, and provides a stainless steel bellows for connecting gas appliances with a self-closing valve, which has the advantages of being able to adjust flow and having a simple structure.

[0008] To achieve the above object, the utility model provides the following technical scheme: A stainless steel bellows for gas appliance connection with self -closing valve, including bellows, one end of bellows is connected with self -closing valve, the self -closing valve includes valve body, the valve body has air inlet, gas outlet and inner chamber, the gas outlet is equipped with the ball valve, the air inlet is equipped with fixed plate, the fixed plate is equipped with overflow hole, the valve body is equipped with adjusting assembly for opening and closing overflow hole or adjusting overflow hole flow, the adjusting assembly includes throttle block, connecting rod, adjusting rod and connecting block, the throttle block is connected to the end of connecting rod, the throttle block corresponds with overflow hole, the valve body has guide hole for connecting rod, the connecting rod is axially arranged along the air inlet, the adjusting rod is slidably connected to the valve body, the adjusting rod extends along the air inlet, the connecting block is installed on the end of adjusting rod, the connecting block is equipped with step block, one end of connecting rod is in abutment with step block, the valve body is equipped with sealing plate in inner chamber, the adjusting rod is slidably connected to the sealing plate.

[0009] Preferably, the end of the adjusting rod is provided with a regulating assembly, the regulating assembly comprises a connecting plate, a fixing frame and a clamping block, the fixing frame is fixedly installed on the valve body, the connecting plate is fixedly installed on the end of the adjusting rod away from the connecting block, the connecting plate is provided with a sliding cavity, the clamping block is slidably connected to the sliding cavity, a first spring is arranged between the clamping block and the sliding cavity, a plurality of positioning holes are arranged on the fixing frame and matched with the clamping block, and the positioning holes are arranged along the movement direction of the adjusting rod.

[0010] Preferably, the end of the clamping block is provided with a chamfered portion, and the side of the positioning hole close to the clamping block is provided with a chamfered hole.

[0011] Preferably, the connecting rod is provided with a limiting plate, a second spring is arranged between the limiting plate and the inner wall of the valve body, and the second spring always has a tendency to drive the throttle block to move close to the connecting block.

[0012] Preferably, the end of the connecting rod is provided with an abutting end, the abutting end is provided with a first slope, the step block is provided with a second slope and an abutting surface, the first slope and the second slope are matched, and the abutting end of the connecting rod is in abutment with the abutting surface.

[0013] Preferably, the connecting block is provided with a vertical plate, the adjusting rod is hingedly connected to the connecting block, the adjusting rod is provided with a limiting surface matched with the vertical plate, the end of the adjusting rod is provided with a curved surface, and the curved surface and the vertical plate are mutually avoided.

[0014] Preferably, the through-flow hole comprises a first hole and a second hole in communication with each other, the first hole and the second hole are both frustoconical holes, the maximum hole diameter of the first hole is smaller than the minimum hole diameter of the second hole, a first contact surface is formed between the first hole and the second hole, the throttle block comprises a first block and a second block, the first block corresponds in shape to the first hole, the second block corresponds in shape to the second hole, and a second contact surface is formed between the first block and the second block, the first contact surface and the second contact surface are in surface contact when the gas inlet is closed.

[0015] Preferably, the through-flow hole is a frustoconical hole, and the throttle block corresponds in shape to the through-flow hole.

[0016] Preferably, the throttle block is made of rubber.

[0017] Preferably, the adjusting rod is provided with a diaphragm in the inner cavity.

[0018] Compared with the prior art, the utility model has the advantages of the following:

[0019] The stainless steel corrugated pipe for connecting gas appliances with a self-closing valve is characterized in that the connecting plate is pulled to move away from the valve body, thereby driving the adjusting rod to move, further driving the connecting block to move, and further enabling the first slope to cooperate with the second slope, so that the abutting end cooperates with the abutting surface in the middle, at this time, the large-flow mode is adjusted to the small-flow mode, and the clamping block cooperates with the positioning hole in the middle, when the abutting end cooperates with the abutting surface away from the sealing plate on one side, at this time, the small-flow mode is adjusted to the closed state, and the clamping block cooperates with the positioning hole away from the valve body, therefore, the gas inlet of the application can adjust the small-flow mode and the large-flow mode in the open state, and the structure is simpler. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a cross-sectional structure schematic view of the utility model;

[0021] Figure 2 It is an enlarged structure schematic view of A in Figure 1

[0022] Figure 3 It is an enlarged structure schematic view of B in Figure 1

[0023] Figure 4 It is an enlarged structure schematic view of C in Figure 1

[0024] Figure 5 It is a three-dimensional structure schematic view of the connecting block of the utility model;

[0025] ​​​Figure 6 It is sectional three-dimensional structure schematic view of the connecting block of the utility model;

[0026] Figure 7 It is three-dimensional structure schematic view of the movable rod part of the utility model;

[0027] Figure 8 It is three-dimensional structure schematic view of the throttle block of the utility model.

[0028] BRIEF DESCRIPTION OF DRAWINGS:1, bellows;2, valve body;201, air inlet;202, inner cavity;203, air outlet;21, ball valve;22, sealing plate;23, diaphragm;24, fixed plate;240, overflow hole;241, first hole;242, second hole;243, first contact surface;3, adjusting assembly;31, throttle block;311, first block;312, second block;313, second contact surface;32, connecting rod;321, mounting rod;322, movable rod;3221, abutting end;3222, first slope;323, limiting plate;33, second spring;34, adjusting rod;341, limiting surface;342, arc surface;35, connecting plate;350, sliding cavity;36, clamping block;361, chamfered part;37, first spring;38, fixed frame;381, positioning hole;382, chamfered hole;39, connecting block;391, stepped block;3911, second slope;3912, abutting surface;392, vertical plate. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0030] For example, Figures 1-8As shown, a stainless steel corrugated pipe for gas appliance connection with a self-closing valve, comprising a corrugated pipe 1, one end of the corrugated pipe 1 is connected with a self-closing valve, the self-closing valve comprises a valve body 2, the valve body 2 has an air inlet 201, an air outlet 203 and an inner cavity 202, the air outlet 203 is provided with a ball valve 21, a fixed plate 24 is arranged in the air inlet 201, the fixed plate 24 is provided with a flow hole 240, the valve body 2 is provided with an adjusting assembly 3 for opening and closing the flow hole 240 or adjusting the flow of the flow hole 240, the adjusting assembly 3 comprises a throttling block 31, a connecting rod 32, an adjusting rod 34 and a connecting block 39, the throttling block 31 is connected to the end of the connecting rod 32, the throttling block 31 is matched with the flow hole 240, the throttling block 31 is made of rubber, the valve body 2 has a guide hole for the connecting rod 32 to pass through, the connecting rod 32 is arranged axially along the air inlet 201, the adjusting rod 34 is slidingly matched with the valve body 2, the adjusting rod 34 extends radially along the air inlet, the connecting block 39 is installed at the end of the adjusting rod 34, the connecting block 39 is provided with a stepped block 391, one end of the connecting rod 32 is in abutting engagement with the stepped block 391, the valve body 2 is provided with a sealing plate 22 located in the inner cavity 202, and the adjusting rod 34 is slidingly matched with the sealing plate 22.

[0031] It should be noted that the connecting rod 32 comprises a movable rod 322 and a mounting rod 321, a bolt is fixedly arranged in the mounting rod 321, a threaded hole is arranged in the connecting rod 32 and threadedly matched with the bolt, and the mounting rod 321 is fixedly matched with the throttling block 31.

[0032] The end of the adjusting rod 34 is provided with a regulating assembly, the regulating assembly comprises a connecting plate 35, a fixing frame 38 and a clamping block 36, the fixing frame 38 is fixedly installed on the valve body 2, the connecting plate 35 is fixedly installed on one end of the adjusting rod 34 away from the connecting block 39, the connecting plate 35 is provided with a sliding cavity 350, the clamping block 36 is slidingly matched in the sliding cavity 350, a first spring 37 is arranged between the clamping block 36 and the sliding cavity 350, the fixing frame 38 is provided with a plurality of positioning holes 381 matched with the clamping block 36, the positioning holes 381 are arranged along the movement direction of the adjusting rod 34, when the clamping block 36 is matched with different positioning holes 381, the number of the positioning holes 381 is three in the present application, when the clamping block 36 is matched with the positioning hole 381 closest to one side of the valve body 2, the air inlet 201 is in a large flow mode, when the clamping block 36 is matched with the positioning hole 381 in the middle, the air inlet 201 is in a small flow mode, and when the clamping block 36 is matched with the positioning hole 381 farthest away from one side of the valve body 2, the air inlet 201 is in a closed state.

[0033] The end of the clamping block 36 is provided with a chamfered portion 361, and the positioning hole 381 close to one side of the clamping block 36 is provided with a chamfered hole 382, so that after the clamping block 36 is pressed, the connecting plate 35 can be better pulled to move, preventing the clamping block 36 from being stuck with the positioning hole 381.

[0034] The connecting rod 32 is provided with a limiting plate 323, and a second spring 33 is abutted between the limiting plate 323 and the inner wall of the valve body 2, and the second spring 33 always has a tendency to drive the throttling block 31 to move close to the connecting block 39.

[0035] The end of the connecting rod 32 is provided with an abutting end 3221, the abutting end 3221 has a first slope 3222, the stepped block 391 has a second slope 3911 and an abutting surface 3912, the second slope 3911 is two, the abutting surface 3912 is three, the first slope 3222 and the second slope 3911 correspondingly match, the abutting end 3221 of the connecting rod 32 abuts with the connecting block 39, and when the abutting end 3221 matches with the three different abutting surfaces 3912, the flow hole 240 is switched between the large flow mode, the small flow mode and the closed state.

[0036] The connecting block 39 is provided with a vertical plate 392, the adjusting rod 34 is hingedly matched with the connecting block 39, the adjusting rod 34 has a limiting surface 341 which is limitedly matched with the vertical plate 392, the end of the adjusting rod 34 is provided with an arc surface 342, the arc surface 342 and the vertical plate 392 avoid each other, so when the connecting block 39 moves close to the sealing plate 22, the limiting surface 341 is abutted with the vertical plate 392, and if the connecting block 39 excessively moves to make the abutting surface 3912 of the connecting block 39 disengage from the abutting end 3221 of the connecting rod 32, the connecting rod 32 is reset by the second spring 33, so that the connecting rod 32 clamps the connecting block 39, at this time, the connecting block 39 is pushed to move away from the sealing plate 22, and after the connecting block 39 contacts with the connecting rod 32, the connecting block 39 can be pushed to rotate around the hinge point, so that the stepped block 391 of the connecting block 39 is abutted with the connecting rod 32 again.

[0037] The flow hole 240 is a circular truncated cone hole, and the throttling block 31 corresponds to the shape of the flow hole 240.

[0038] Further optimization, the overflow hole 240 comprises a first hole 241 and a second hole 242 which are communicated with each other, the first hole 241 and the second hole 242 are both circular truncated cone holes, the maximum hole diameter of the first hole 241 is smaller than the minimum hole diameter of the second hole 242, a first contact surface 243 is formed between the first hole 241 and the second hole 242, the throttling block 31 comprises a first block 311 and a second block 312, the first block 311 corresponds to the first hole 241 in shape, the second block 312 corresponds to the second hole 242 in shape, and a second contact surface 313 is formed between the first block 311 and the second block 312, when the air inlet 201 is closed, the first contact surface 243 and the second contact surface 313 are in surface contact.

[0039] In the initial state, the abutting end 3221 is matched with the abutting surface 3912 closest to the sealing plate 22.

[0040] In use: first press the clamping block 36, then move the connecting plate 35 to the side away from the valve body 2, thereby driving the adjusting rod 34 to move, thereby driving the connecting block 39 to move, thereby making the first slope 3222 match the second slope 3911, so as to realize that the abutting end 3221 matches the abutting surface 3912 in the middle, at this time, the large flow mode is adjusted to the small flow mode, and the clamping block 36 matches and connects with the positioning hole 381 in the middle, when the abutting end 3221 matches the abutting surface 3912 away from the sealing plate 22, at this time, the small flow mode is adjusted to the closed state, and the clamping block 36 matches the positioning hole 381 away from the valve body 2, therefore, the air inlet 201 of the application can adjust the small flow mode and the large flow mode in the open state.

[0041] It should be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0042] Although the embodiments of the present application have been shown and described, it should be understood by those ordinary skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A stainless steel corrugated pipe for gas appliance connection with a self-closing valve, comprising a corrugated pipe (1), one end of which is connected with a self-closing valve, the self-closing valve comprising a valve body (2) having an air inlet (201), an air outlet (203) and an inner cavity (202), the air outlet (203) being provided with a ball valve (21), characterized in that: The fixed plate (24) is provided with a flow hole (240), the valve body (2) is provided with an adjusting assembly (3) for opening and closing the flow hole (240) or adjusting the flow of the flow hole (240), the adjusting assembly (3) comprises a throttling block (31), a connecting rod (32), an adjusting rod (34) and a connecting block (39), the throttling block (31) is connected to the end of the connecting rod (32), the throttling block (31) is matched with the flow hole (240), the valve body (2) has a guide hole for the connecting rod (32) to pass through, the connecting rod (32) is arranged axially along the air inlet (201), the adjusting rod (34) is slidably matched with the valve body (2), the adjusting rod (34) extends radially along the air inlet (201), the connecting block (39) is installed at the end of the adjusting rod (34), the connecting block (39) is provided with a stepped block (391) therein, one end of the connecting rod (32) is abutted and matched with the stepped block (391), the valve body (2) is provided with a sealing plate (22) located in the inner cavity (202), and the adjusting rod (34) is slidably matched with the sealing plate (22).

2. A stainless steel corrugated tube for gas appliance connection with a self-closing valve according to claim 1, characterized in that: The end of the adjusting rod (34) is provided with a regulating assembly, the regulating assembly comprises a connecting plate (35), a fixed frame (38) and a clamping block (36), the fixed frame (38) is fixedly installed on the valve body (2), the connecting plate (35) is fixedly installed at one end of the adjusting rod (34) away from the connecting block (39), the connecting plate (35) is provided with a sliding cavity (350) therein, the clamping block (36) is slidably matched in the sliding cavity (350), a first spring (37) is arranged between the clamping block (36) and the sliding cavity (350), the fixed frame (38) is provided with a plurality of positioning holes (381) matched with the clamping block (36), and the positioning holes (381) are arranged along the movement direction of the adjusting rod (34).

3. A stainless steel corrugated tube for gas appliance connection with a self-closing valve according to claim 2, characterized in that: The end of the clamping block (36) is provided with a chamfered portion (361), and the side of the positioning hole (381) close to the clamping block (36) is provided with a chamfered hole (382).

4. A stainless steel corrugated tube for gas appliance connection with a self-closing valve according to claim 1, characterized in that: The outer periphery of the connecting rod (32) is provided with a limiting plate (323), a second spring (33) is arranged between the limiting plate (323) and the inner wall of the valve body (2), and the second spring (33) always has a tendency to drive the throttling block (31) to move close to the connecting block (39).

5. A stainless steel corrugated tube for gas appliance connection with a self-closing valve according to claim 4, characterized in that: The end of the connecting rod (32) is provided with an abutting end (3221), the abutting end (3221) is provided with a first slope (3222), the stepped block (391) is provided with a second slope (3911) and an abutting surface (3912), the first slope (3222) and the second slope (3911) are matched, and the abutting end (3221) of the connecting rod (32) is abutted and matched.

6. A stainless steel corrugated tube for gas appliance connection with a self-closing valve according to claim 5, characterized in that: The connecting block (39) is provided with a vertical plate (392), the adjusting rod (34) is hingedly connected with the connecting block (39), the adjusting rod (34) is provided with a limiting surface (341) for limiting the vertical plate (392), and the end of the adjusting rod (34) is provided with an arc surface (342) which is kept away from the vertical plate (392).

7. A stainless steel corrugated tube for gas appliance connection with a self-closing valve according to claim 1, characterized in that: The overflow hole (240) comprises a first hole (241) and a second hole (242) which are in communication with each other, the first hole (241) and the second hole (242) are both circular truncated cone holes, the maximum hole diameter of the first hole (241) is smaller than the minimum hole diameter of the second hole (242), a first contact surface (243) is formed between the first hole (241) and the second hole (242), the throttle block (31) comprises a first block (311) and a second block (312), the first block (311) is shaped corresponding to the first hole (241), the second block (312) is shaped corresponding to the second hole (242), and a second contact surface (313) is formed between the first block (311) and the second block (312), when the air inlet (201) is closed, the first contact surface (243) and the second contact surface (313) are in surface contact.

8. A stainless steel corrugated tube for gas appliance connection with a self-closing valve according to claim 1, characterized in that: The overflow hole (240) is a circular truncated cone hole, and the throttle block (31) is shaped corresponding to the overflow hole (240).

9. A stainless steel corrugated tube for gas appliance connection with a self-closing valve according to claim 1, characterized in that: The throttle block (31) is made of rubber.

10. A stainless steel corrugated tube for gas appliance connection with a self-closing valve according to claim 1, characterized in that: The adjusting rod (34) is provided with a diaphragm (23) on the outer periphery of the adjusting rod (34) and located in the inner cavity (202).

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