Stainless steel corrugated pipe provided with insulating joint and used for gas appliance connection

Abstract

The utility model discloses a stainless steel corrugated pipe with insulating joints for gas appliance connection, which comprises a corrugated pipe body, a coating layer and two fixed joints, the coating layer wraps the peripheral side of the corrugated pipe body, the two fixed joints are respectively inserted into two ends of the corrugated pipe body, and the insulating joints are arranged on the two ends of the corrugated pipe body. The fixed joint comprises a first joint, a second joint and an insulating sheath, the first joint and the second joint are respectively embedded and fixed in two ends of the insulating sheath, two fixed sheets are uniformly arranged in the inner circumferential direction of the outer end of the first joint, and fixed ring blocks are arranged on the outer side walls of the fixed sheets; and the fixing ring block is inserted and fixed to the inner circumferential side of the corrugated pipe body, driving screws are evenly and rotationally connected to the side wall of the first connector in the circumferential direction, and the inner ends of the driving screws are arranged in the side walls of the fixing pieces in a threaded fit mode. The assembly fixing joint has the effect of improving the installation efficiency of the assembly fixing joint.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of corrugated pipes, in particular to a stainless steel corrugated pipe with an insulating joint for connecting a gas appliance. BACKGROUND

[0002] The corrugated pipe connector comprises a corrugated pipe body, a coating layer and two fixed joints, the coating layer is sleeved on the peripheral side of the corrugated pipe body, and the two fixed joints are respectively installed at the two ends of the corrugated pipe body; the fixed joint comprises an external nut, a connecting head, two limiting snap rings and a sealing ring, when the fixed joint needs to be installed at one end of the corrugated pipe body, the external nut is first sleeved on the peripheral side of the corrugated pipe body, then the two limiting snap rings are sleeved and fixed on the peripheral side of one end of the corrugated pipe body, so that the two limiting snap rings form a complete ring, then the two limiting snap rings are located in the external nut and abut against the inner side wall of the external nut, then the sealing ring is placed in the external nut and abuts against one side of the two limiting snap rings, and finally one end of the connecting head is threadedly connected in the external nut and presses the sealing ring; as known from the above, the fixed joint has a plurality of parts, and the plurality of parts need to be sequentially installed on one end of the corrugated pipe body, so that the installation efficiency of the fixed joint is low. CONTENT OF THE UTILITY MODEL

[0003] The utility model discloses a stainless steel corrugated pipe with an insulating joint for connecting a gas appliance.

[0004] To achieve the above object, the utility model adopts the following technical scheme:

[0005] The utility model discloses a corrugated pipe body, a coating layer and two fixed joints, the coating layer is wrapped in the outer peripheral side of the corrugated pipe body, and two fixed joints are respectively inserted into the two ends of the corrugated pipe body, the fixed joint includes first joint, second joint and insulating sheath, the first joint and the second joint are respectively embedded and fixed in the both ends of the insulating sheath, the outer end inner periphery of the first joint is evenly provided with two fixed sheets, the outer side wall of the fixed sheet is provided with a fixed ring block, the fixed ring block is inserted and fixed to the inner peripheral side of the corrugated pipe body, the inner periphery of the side wall of the first joint is evenly rotationally connected with a drive screw, and the inner end of the drive screw is threadedly connected with the side wall of the fixed sheet.

[0006] Preferably, the two ends of the coating layer are respectively sleeved and fixed with steel sleeves, the inner peripheral side of the outer end of the steel sleeve is evenly provided with a plurality of clamping blocks, the outer peripheral side of the first joint is circumferentially provided with a ring groove, and the plurality of clamping blocks are respectively clamped and fixed in the ring groove.

[0007] Preferably, a sealing ring piece is arranged between the first joint and the corrugated pipe body.

[0008] Preferably, the inner circumferential side of the steel sleeve is provided with a mounting groove, and the outer circumferential side of the sealing ring piece is embedded and fixed in the mounting groove.

[0009] Preferably, the outer end of the second connector is provided with a rubber gasket.

[0010] Preferably, the outer end of the rubber gasket is provided with a locking inclined surface, which is arranged inwardly and obliquely from outside to inside.

[0011] Preferably, the outer end of the second connector is inserted and fixed with a nut cover.

[0012] Therefore, the present application has at least one of the following beneficial technical effects:

[0013] 1. When the fixed connector needs to be installed on the outer end of the corrugated pipe body, first, the two fixing pieces are uniformly placed in the outer end of the first connector, then one end of the drive screw is threaded through the side wall of the first connector and is screwed into the fixing piece, one end of the steel sleeve is tightly sleeved and fixed on the outer circumferential side of the coating layer, then the outer end of the first connector is close to the corrugated pipe body, then the first connector is inserted into the steel sleeve, until one end of the first connector abuts against one end of the corrugated pipe body, the clamping block on the inner circumferential side of the steel sleeve is clamped and fixed in the ring groove, thereby the first connector is pre-fixed, then the drive screw is rotated, and under the threaded cooperation between the drive screw and the fixing piece, the two fixing pieces are away from each other, the fixing ring block on the fixing piece is embedded in the groove of the corrugated pipe body, thereby the fixed connector is fixed on the outer end of the corrugated pipe body, and the installation efficiency of the assembled fixed connector is improved.

[0014] 2. Before the first connector is installed on one end of the corrugated pipe body, the sealing ring piece is embedded in the mounting groove, then after the first connector is inserted and fixed in the steel sleeve, the sealing ring piece is located between the first connector and the corrugated pipe body, thereby the sealing property between the first connector and the corrugated pipe body is improved.

[0015] 3. When the transportation pipeline is connected with the second connector, one end of the transportation pipeline abuts against the outer end of the rubber gasket, then under the action of the locking inclined surface, the outer circumferential side of the rubber gasket can abut against the circumferential side of the second connector, thereby the sealing property between the transportation pipeline and the second connector is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a sectional view of the corrugated pipe of the present application;

[0017] Figure 2 is Figure 1 is an enlarged view of A in FIG.

[0018] In the figure: 1, bellows body; 2, covering layer; 3, fixed joint; 4, first joint; 5, second joint; 6, insulation sheath; 7, electric ring; 8, rubber washer; 9, locking slope; 10, nut cover; 11, fixed sheet; 12, fixed ring block; 13, counterbore; 14, drive screw; 15, steel sleeve; 16, clamping block; 17, ring groove; 18, mounting groove; 19, sealing ring piece; 20, sealing gasket. DETAILED DESCRIPTION

[0019] The utility model will be further described below with reference to the drawings.

[0020] The utility model discloses a stainless steel bellows for connecting gas appliance with insulation joint.

[0021] Reference Figure 1 And Figure 2 Including bellows body 1, covering layer 2 and two fixed joints 3, covering layer 2 is wrapped in the circumferential side of bellows body 1, and two fixed joints 3 are located at both ends of bellows body 1 respectively.

[0022] Fixed joint 3 includes first joint 4, second joint 5 and insulation sheath 6, first joint 4 and second joint 5 are respectively inserted into both ends of insulation sheath 6, insulation sheath 6 has electric ring 7 inside, electric ring 7 is located between first joint 4 and second joint 5, and first joint 4, second joint 5 and insulation sheath 6 are integrally injection molded.

[0023] The inner circumferential side of the outer end of second joint 5 has internal thread, the inner bottom of second joint 5 is placed with rubber washer 8, locking slope 9 is formed in the outer end of rubber washer 8, and the thickness of rubber washer 8 gradually decreases from outside to inside. One end of the transport pipeline is abutted to the outer end of rubber washer 8, then the outer circumferential side of rubber washer 8 can be tightly abutted to the circumferential side of second joint 5 under the action of locking slope 9, so that the sealing property between the transport pipeline and second joint 5 is increased.

[0024] The outer end of second joint 5 is inserted with nut cover 10, when the bellows is not used, nut cover 10 is inserted and covered in the outer end of second joint 5, which can prevent the dust outside from entering the bellows.

[0025] Two fixing pieces 11 are evenly arranged on the outer end inner circumferential side of the first joint 4 in a circumferential direction, the fixing pieces 11 are in the shape of circular arc pieces, an outer side wall of one end of the fixing piece 11 is integrally provided with a fixing ring block 12 in a circular arc direction, the fixing ring block 12 can be embedded and fixed in a groove inside the corrugated pipe body 1, two counterbores 13 are evenly arranged on the outer circumferential side of the first joint 4 in a circumferential direction, a sealing gasket 20 is arranged on the bottom of the counterbores 13, a drive screw 14 is rotatably connected in the counterbores 13, one end of the drive screw 14 penetrates through the sealing gasket 20 and the counterbores 13 and is threadedly connected in the side wall of the fixing piece 11. When the two drive screws 14 are rotated, the two fixing pieces 11 can be away from or close to each other under the thread cooperation of the drive screws 14 and the fixing pieces 11, when the fixing pieces 11 are attached to the inner side wall of the first joint 4, the fixing ring block 12 is inserted and fixed in the groove of the inner side wall of the corrugated pipe body 1.

[0026] Steel sleeves 15 are tightly fixed on the outer circumferential sides of both ends of the coating layer 2, the outer end side walls of the steel sleeves 15 are evenly provided with four bendable clamping blocks 16, a ring groove 17 is arranged on the outer circumferential side of the first joint 4 in a circumferential direction, one end of each of the four clamping blocks 16 is clamped and fixed in the ring groove 17. The two fixing pieces 11 are evenly arranged on the outer end of the first joint 4, then one end of the drive screw 14 penetrates through the side wall of the first joint 4 and is threadedly connected in the fixing piece 11, one end of the steel sleeve 15 is tightly sleeved and fixed on the outer circumferential side of one end of the coating layer 2, then the outer end of the first joint 4 is close to the corrugated pipe body 1, then the first joint 4 is inserted into the steel sleeve 15, until one end of the first joint 4 abuts against one end of the corrugated pipe body 1, then the clamping blocks 16 on the inner circumferential side of the steel sleeve 15 are clamped and fixed in the ring groove 17, so that the first joint 4 is pre-fixed, then the drive screw 14 is rotated, the two fixing pieces 11 are away from each other under the thread cooperation between the drive screw 14 and the fixing piece 11, the fixing ring block 12 on the fixing piece 11 is embedded in the groove of the corrugated pipe body 1.

[0027] An installation groove 18 is arranged on the inner circumferential side of the steel sleeve 15 in a circumferential direction, a sealing ring piece 19 is embedded and fixed in the installation groove 18, the sealing ring piece 19 is located between the corrugated pipe body 1 and the first joint 4. After the steel sleeve 15 is tightly fixed on one end of the coating layer 2, the outer circumferential side of the sealing ring piece 19 is embedded and fixed in the installation groove 18, the stability of the installation of the sealing ring piece 19 is improved.

[0028] The above is only a preferred embodiment of the present application, therefore, equivalent changes or modifications made according to the structure, features and principles of the present application patent application range are included in the present application patent application range.

Claims

1. A stainless steel corrugated pipe for gas appliance connection with an insulated joint, comprising a corrugated pipe body (1), a coating layer (2) wrapped on the outer circumferential side of the corrugated pipe body (1), and two fixed joints (3) respectively inserted into both ends of the corrugated pipe body (1), characterized in that: The fixed joint (3) comprises a first joint (4), a second joint (5) and an insulating sheath (6), the first joint (4) and the second joint (5) are respectively embedded and fixed in two ends of the insulating sheath (6), the outer end of the first joint (4) is uniformly provided with two fixed sheets (11) in the circumferential direction, the outer side wall of the fixed sheet (11) is provided with a fixed ring block (12), the fixed ring block (12) is inserted and fixed to the inner circumferential side of the corrugated pipe body (1), the side wall of the first joint (4) is uniformly connected with a drive screw (14) in the circumferential direction, the inner end of the drive screw (14) is threadedly connected to the side wall of the fixed sheet (11).

2. A stainless steel corrugated tube for gas appliance connection with insulated joint according to claim 1, characterized in that, The both ends of the coating layer (2) are respectively sleeved and fixed with a steel sleeve (15), the inner circumferential side of the outer end of the steel sleeve (15) is uniformly provided with a plurality of clamping blocks (16), the outer circumferential side of the first joint (4) is circumferentially provided with a ring groove (17), and the plurality of clamping blocks (16) are respectively clamped and fixed in the ring groove (17).

3. A stainless steel corrugated tube for gas appliance connection with insulated joint according to claim 2, characterized in that, The first joint (4) and the corrugated pipe body (1) are provided with a sealing ring sheet (19).

4. A stainless steel corrugated tube for gas appliance connection with insulated joint according to claim 3, characterized in that, The inner circumferential side of the steel sleeve (15) is provided with a mounting groove (18), and the outer circumferential side of the sealing ring sheet (19) is embedded and fixed in the mounting groove (18).

5. A stainless steel corrugated tube for gas appliance connection with insulated joint according to claim 1, characterized in that, The outer end of the second joint (5) has a rubber gasket (8).

6. A stainless steel gas appliance connecting bellows with insulated joint according to claim 5, characterized in that, The outer end of the rubber gasket (8) is provided with a locking inclined surface (9), and the locking inclined surface (9) is inclined inward from outside to inside.

7. A stainless steel corrugated tube for gas appliance connection with insulated joint according to claim 1, characterized in that The outer end of the second joint (5) is inserted and fixed with a nut cover (10).

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