Gas leakproof joint for gas bell-type furnace

Abstract

The utility model discloses a gas leakproof joint for a gas bell-type furnace, and relates to the technical field of bell-type furnaces, the gas leakproof joint comprises an upper joint, a pressing block and a lower joint, the inner wall of a through hole is connected with a limiting ring, the other end of a second spring is provided with a first sealing gasket, four groups of clamping blocks are symmetrically arranged on the inner wall of the through hole, and a second spring is arranged on the lower joint. Four sets of stop blocks are symmetrically arranged on the outer side of the lower connector, and a clamping groove is formed between every two sets of stop blocks. The clamping blocks are arranged, the four sets of clamping blocks symmetrically arranged on the inner wall of the through hole slide upwards in the clamping grooves, the clamping blocks slide out of the clamping grooves, the lower connector is rotated by a certain angle, the clamping blocks can be clamped below the stopping blocks, and therefore assembling connection of the lower connector and the upper connector is completed; the lower joint and the upper joint can be disassembled and assembled without manually rotating for multiple circles when the upper joint and the lower joint are disassembled and assembled, so that the assembling and disassembling time of the upper joint and the lower joint of the gas joint is effectively shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of bell-type furnaces, in particular to a gas leakage-proof joint for a gas bell-type furnace. Background Art

[0002] In recent years, with the increasing market demand for bright annealing plates and strips of ferrous and non-ferrous metals, these plates and strips are often delivered in the form of coils during the production process. Their heat treatment has long relied mainly on bell-type furnaces. In order to ensure the temperature in the furnace during the heat treatment process, heating must be carried out. At present, most bell-type furnaces are heated by gas, and the gas joint is one of the main components of the gas bell-type furnace.

[0003] Since the existing bell-type furnace needs to exchange the heating hood and the cooling hood once in a heat treatment cycle, the gas joint must be removed when moving the heating hood. Since the gas joint is installed on the side of the heating hood, the weight of the joint is heavy. The upper and lower joints of the gas joint are mostly assembled by threaded connection. When manually disassembling the upper and lower joints, the number of rotations is large, which easily causes the upper and lower joints of the gas joint to take a long time to assemble and disassemble. To this end, we provide a gas leak-proof joint for a gas bell-type furnace to solve the above problems. Utility Model Content

[0004] 1) Technical issues solved

[0005] The utility model aims to make up for the deficiencies of the prior art and provides a gas leak-proof joint for a gas bell-type furnace.

[0006] 2) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a gas leak-proof joint for a gas hood-type furnace, comprising an upper joint, a pressure block and a lower joint, the bottom end of the upper joint is connected to a No. 1 connecting seat, the interior of the No. 1 connecting seat is penetrated by a through hole, the inner wall of the through hole is connected to a limiting ring, the bottom end of the limiting ring is provided with a receiving groove, the interior of the receiving groove is provided with multiple groups of No. 2 springs, the other end of the No. 2 spring is provided with a No. 1 sealing gasket, the inner wall of the through hole is symmetrically provided with four groups of positioning blocks, the outer side of the lower joint is symmetrically provided with four groups of blocking blocks, a positioning groove is provided between the two groups of blocking blocks, and the positioning groove is engaged with the positioning block.

[0008] Furthermore, the pressing block is movably arranged on the outside of the upper joint, a No. 1 spring is arranged at the bottom end of the pressing block, and the No. 1 spring is connected to the top end of the No. 1 connecting seat.

[0009] Furthermore, a guide head is provided at the top end of the lower joint, and the guide head is engaged and connected with the through hole, and an air outlet hole is opened through the inside of the guide head.

[0010] Furthermore, a coupling groove is provided at the bottom end of the No. 1 coupling seat, a No. 2 coupling seat is provided on the outer side of the lower joint, a No. 2 sealing gasket is provided on the top of the No. 2 coupling seat, and the No. 2 sealing gasket is engaged and connected with the coupling groove.

[0011] Furthermore, the No. 1 sealing pad and the No. 2 sealing pad are both made of flexible rubber pads.

[0012] Furthermore, a No. 1 flange is provided at the top end of the upper joint, and a No. 2 flange is provided at the bottom end of the lower joint.

[0013] III) Beneficial effects:

[0014] Compared with the prior art, the gas leak-proof joint for the gas bell-type furnace has the following beneficial effects:

[0015] 1. The utility model is provided with components such as blocking blocks and positioning blocks. Four groups of positioning blocks symmetrically arranged on the inner wall of the through hole slide upward inside the positioning groove. The blocking blocks squeeze the No. 1 sealing gasket, so that the connection between the lower joint and the upper joint can be initially sealed to avoid leakage at the gas joint. At this time, the positioning block slides out of the positioning groove, and the positioning block can be positioned under the blocking block by rotating the lower joint at a certain angle, thereby completing the assembly and connection of the lower joint and the upper joint. There is no need to manually rotate the upper joint and the lower joint for multiple circles when disassembling the upper joint and the lower joint, so the assembly and disassembly of the lower joint and the upper joint of the gas joint can be achieved, effectively shortening the assembly and disassembly time of the upper joint and the lower joint of the gas joint.

[0016] 2. The utility model is provided with components such as a No. 2 sealing gasket. After the joint groove is engaged with the No. 2 sealing gasket, the No. 2 sealing gasket can be squeezed, deformed and stored. The No. 2 sealing gasket can be used to perform a secondary seal on the connection between the lower joint and the upper joint to avoid gas leakage and the like. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the explosion structure of the lower joint of the utility model;

[0019] Figure 3 This is a front cross-sectional view of the upper joint of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of point A of the utility model.

[0021] In the figure: 1. upper joint; 2. No. 1 flange; 3. pressure block; 4. No. 1 spring; 5. No. 1 connecting seat; 6. through hole; 7. engaging groove; 8. limiting ring; 9. storing groove; 10. No. 2 spring; 11. No. 1 sealing gasket; 12. positioning block; 13. lower joint; 14. guide head; 15. air outlet; 16. blocking block; 17. positioning groove; 18. No. 2 connecting seat; 19. No. 2 sealing gasket; 20. No. 2 flange. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the utility model provides a technical solution: a gas leak-proof joint for a gas bell-type furnace;

[0024] It includes an upper joint 1, a pressure block 3 and a lower joint 13. The bottom end of the upper joint 1 is connected to a No. 1 connecting seat 5. A through hole 6 is formed inside the No. 1 connecting seat 5. The inner wall of the through hole 6 is connected to a limiting ring 8. A receiving groove 9 is formed at the bottom end of the limiting ring 8. A plurality of groups of No. 2 springs 10 are arranged inside the receiving groove 9. A No. 1 sealing gasket 11 is arranged at the other end of the No. 2 spring 10. Four groups of positioning blocks 12 are symmetrically arranged on the inner wall of the through hole 6. Four groups of blocking blocks 16 are symmetrically arranged on the outer side of the lower joint 13. A positioning groove 17 is arranged between two groups of blocking blocks 16, and the positioning groove 17 is engaged with the positioning block 12.

[0025] The through hole 6 is opened through the inside of the No. 1 connecting seat 5, and the through hole 6 provides a fitting connection space for the guide head 14. In the process of fitting connection between the guide head 14 and the through hole 6, the four groups of positioning blocks 12 symmetrically arranged on the inner wall of the through hole 6 slide upward with the inside of the positioning groove 17. After the blocking block 16 contacts the No. 1 sealing gasket 11, it continues to apply thrust to the lower joint 13. The blocking block 16 can pressurize and push the No. 1 sealing gasket 11 to deform the No. 2 spring 10, and the No. 2 spring 10 is received in the receiving groove 9, so that the No. 1 sealing gasket 11 and the limiting ring 8 are connected. The contact between the lower joint 13 and the upper joint 1 can be sealed to prevent leakage at the gas joint. At this time, the blocking block 12 slides out of the blocking groove 17. By rotating the lower joint 13 at a certain angle, the blocking block 12 can be blocked under the blocking block 16, thereby completing the assembly and connection of the lower joint 13 and the upper joint 1. There is no need to manually rotate the upper joint 1 and the lower joint 13 for multiple circles when disassembling the upper joint 1 and the lower joint 13, so the disassembly and assembly of the lower joint 13 and the upper joint 1 can be achieved, effectively shortening the assembly and disassembly time of the upper joint 1 and the lower joint 13 of the gas joint.

[0026] like Figure 1 , Figure 2 and Figure 3 As shown, the utility model provides a technical solution: a gas leak-proof joint for a gas bell-type furnace;

[0027] The pressure block 3 is movably arranged on the outside of the upper joint 1, a No. 1 spring 4 is arranged at the bottom end of the pressure block 3, and the No. 1 spring 4 is connected to the top of the No. 1 connecting seat 5, a No. 1 flange 2 is arranged at the top end of the upper joint 1, a No. 2 flange 20 is arranged at the bottom end of the lower joint 13, a guide head 14 is arranged at the top end of the lower joint 13, and the guide head 14 is engaged with the through hole 6, and an air outlet 15 is opened through the inside of the guide head 14.

[0028] The pressing block 3 can be movably connected and installed on the outer side of the upper joint 1 through the support of the No. 1 spring 4 at the bottom. Through the elastic action of the No. 1 spring 4, the pressing block 3 can move up and down relative to the upper joint 1. The No. 1 flange 2 set at the top of the upper joint 1 and the No. 2 flange 20 at the bottom of the lower joint 13 can be connected to the gas pipeline respectively. The upper joint 1 can be fixed on the heating hood through the pressing block 3, and the lower joint 13 is installed on the base of the hood-type furnace. After the guide head 14 is embedded and installed in the inside of the through hole 6, the gas can enter the inside of the upper joint 1 through the gas outlet 15.

[0029] like Figure 2 , Figure 3 and Figure 4 As shown, the utility model provides a technical solution: a gas leak-proof joint for a gas bell-type furnace;

[0030] A coupling groove 7 is provided at the bottom end of the No. 1 coupling seat 5, a No. 2 coupling seat 18 is provided on the outer side of the lower joint 13, a No. 2 sealing gasket 19 is provided on the top of the No. 2 coupling seat 18, and the No. 2 sealing gasket 19 is engaged with the coupling groove 7, and both the No. 1 sealing gasket 11 and the No. 2 sealing gasket 19 are made of flexible rubber pads.

[0031] A joint groove 7 is opened at the bottom end of the No. 1 connecting seat 5. After the joint groove 7 and the No. 2 sealing gasket 19 are engaged and connected, the No. 2 sealing gasket 19 can be squeezed and deformed to be stored. The connection between the lower joint 13 and the upper joint 1 can be sealed again through the No. 2 sealing gasket 19 to avoid gas leakage and the like.

[0032] Working principle: During the process of the guide head 14 and the through hole 6 being engaged, the four groups of positioning blocks 12 symmetrically arranged on the inner wall of the through hole 6 slide upward inside the positioning groove 17. After the blocking block 16 contacts the No. 1 sealing gasket 11, the No. 2 spring 10 is deformed. The No. 2 spring 10 is received in the receiving groove 9, so that the No. 1 sealing gasket 11 contacts the limiting ring 8, and the connection between the lower joint 13 and the upper joint 1 is initially sealed to avoid leakage at the gas joint. After the joint groove 7 is engaged with the No. 2 sealing gasket 19, the No. 2 sealing gasket 19 can be squeezed and deformed. The second sealing gasket 19 can be used to perform a secondary seal on the connection between the lower joint 13 and the upper joint 1 to avoid gas leakage. At this time, the blocking block 12 slides out of the blocking groove 17. By rotating the lower joint 13 at a certain angle, the blocking block 12 can be positioned below the blocking block 16, thereby completing the assembly and connection of the lower joint 13 and the upper joint 1. There is no need to manually rotate the upper joint 1 and the lower joint 13 for multiple circles when disassembling the upper joint 1 and the lower joint 13, so the disassembly and assembly of the lower joint 13 and the upper joint 1 can be achieved, effectively shortening the assembly and disassembly time of the upper joint 1 and the lower joint 13 of the gas joint.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gas leak-proof joint for a gas bell-type furnace, comprising an upper joint (1), a pressing block (3) and a lower joint (13), characterized in that: The bottom end of the upper joint (1) is connected to a No. 1 connection seat (5), a through hole (6) is provided inside the No. 1 connection seat (5), the inner wall of the through hole (6) is connected to a limit ring (8), the bottom end of the limit ring (8) is provided with a receiving groove (9), a plurality of groups of No. 2 springs (10) are arranged inside the receiving groove (9), a No. 1 sealing gasket (11) is arranged at the other end of the No. 2 spring (10), four groups of positioning blocks (12) are symmetrically arranged on the inner wall of the through hole (6), four groups of blocking blocks (16) are symmetrically arranged on the outer side of the lower joint (13), a positioning groove (17) is arranged between two groups of the blocking blocks (16), and the positioning groove (17) is engaged with the positioning block (12).

2. A gas leak-proof joint for a gas bell-type furnace according to claim 1, characterized in that: The pressing block (3) is movably arranged on the outside of the upper joint (1), a No. 1 spring (4) is arranged at the bottom end of the pressing block (3), and the No. 1 spring (4) is connected to the top end of the No. 1 connecting seat (5).

3. The gas leak-proof joint for a gas bell-type furnace according to claim 1, characterized in that: A guide head (14) is provided at the top end of the lower joint (13), and the guide head (14) is engaged with the through hole (6), and an air outlet hole (15) is provided through the interior of the guide head (14).

4. The gas leak-proof joint for a gas bell-type furnace according to claim 1, characterized in that: A coupling groove (7) is provided at the bottom end of the No. 1 coupling seat (5), a No. 2 coupling seat (18) is provided on the outer side of the lower joint (13), a No. 2 sealing gasket (19) is provided on the top of the No. 2 coupling seat (18), and the No. 2 sealing gasket (19) is engaged and connected with the coupling groove (7).

5. The gas leak-proof joint for a gas bell-type furnace according to claim 1, characterized in that: The first sealing pad (11) and the second sealing pad (19) are both made of flexible rubber pads.

6. The gas leak-proof joint for a gas bell-type furnace according to claim 1, characterized in that: A first flange (2) is provided at the top end of the upper joint (1), and a second flange (20) is provided at the bottom end of the lower joint (13).

Images