Automatic calcium carbide furnace door gas source pipeline insulation device
By installing nylon adapters at the inlet and outlet nozzles of the calcium carbide furnace cylinder, combined with components such as locking pins and levers, the problem of poor insulation of the gas supply pipe connecting the furnace door cylinder to the calcium carbide furnace was solved, improving insulation and sealing performance and preventing electrical arcing and equipment damage.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XINJIANG SHENGXIONG CALCIUM CARBIDE CO LTD
- Filing Date
- 2025-06-20
- Publication Date
- 2026-06-09
AI Technical Summary
Problems with short circuits, sparking, and equipment damage caused by poor insulation in the gas supply pipe connecting the furnace door cylinder of the calcium carbide furnace.
Nylon adapters are installed at the air inlet and outlet of the cylinder and secured with components such as locking pins and levers to enhance insulation and sealing, and prevent loosening.
This effectively avoids electrical arcing caused by insulation problems, prevents equipment damage, and improves the safety and stability of the equipment.
Smart Images

Figure CN224339727U_ABST
Abstract
Description
Technical Field
[0001] This solution belongs to the field of gas source pipeline insulation, specifically involving an insulation device for the gas source pipeline of an automatic furnace door for a calcium carbide furnace. Background Technology
[0002] Currently, most calcium carbide furnaces use compressed air as power and cylinders as mechanical parts to achieve automatic opening of the furnace door.
[0003] A search revealed that a utility model patent with authorization announcement number CN218846890U discloses a pneumatic furnace door for a calcium carbide furnace, which includes a calcium carbide furnace, a furnace door, a fixing plate, a first cylinder, a second cylinder, a first hinge device, a pin, a latch, and a second hinge device. The furnace opening of the calcium carbide furnace is hinged to the left side of the furnace door, and a fixing plate is fixedly installed on the front left side of the furnace door. The first hinge device is provided on the front side of the fixing plate.
[0004] However, because the calcium carbide furnace is a high-temperature device, the cylinder connection pipe of the furnace door must be connected using a cylinder connection pipe containing an explosion-proof steel wire tube. The two ends are connected with screws. During normal operation of the calcium carbide furnace, short circuits and arcing are likely to occur, causing cylinder damage, electric arc burns of the equipment, short circuits in the calcium carbide furnace cooling equipment, water leakage, flash explosions, and other abnormal situations. Utility Model Content
[0005] The purpose of this solution is to provide an insulation device for the gas supply pipeline of the automatic furnace door of a calcium carbide furnace, so as to solve the problem of arcing and equipment damage caused by poor insulation of the gas supply pipeline connecting the furnace door cylinder.
[0006] To achieve the above objectives, this solution provides an insulation device for the gas supply pipeline of an automatic furnace door for a calcium carbide furnace, including a cylinder. An air inlet and an air outlet are connected to the cylinder. A locking disc is fixedly connected to both the air inlet and the air outlet. A nylon adapter is threadedly connected inside the air inlet. A locking pin slides inside the nylon adapter, penetrating the locking disc and slidably connected to it. A guide rod is fixedly connected inside the nylon adapter, slidably connected to the locking pin. A spring is sleeved on the outer side of the guide rod. A lever is fixedly connected to the locking pin, slidably connected to the nylon adapter.
[0007] The principle of this solution is as follows: First, the nylon adapter is threaded onto the air inlet or outlet of the cylinder. After the nylon adapter is screwed in place, the locking pin is controlled by the lever, causing it to insert laterally into the locking disc. This prevents the nylon adapter from loosening. Finally, the sliding sleeve is engaged with the magnetic ring on the lever, and the rubber ball at the end of the connecting strip is engaged into the nylon adapter. This locks and secures the lever and the locking pin, further improving the stability of the nylon adapter installation. Subsequently, the threads of the cylinder's air inlet and outlet pipes are installed on the internal threads of the nylon adapter. The nylon adapter has insulating properties, preventing short circuits and sparking caused by insulation issues, thus avoiding equipment or production accidents caused by short circuits damaging water supply equipment.
[0008] The technical advantages of this solution are as follows: By adding nylon adapters at the air inlet and outlet of the cylinder for the transition between the air inlet and outlet and the air pipe, the nylon adapters, with their insulating properties, avoid short circuits and sparking caused by insulation issues, thus preventing equipment or production accidents caused by short circuits damaging the water supply equipment. In addition, locking discs are installed at both the air inlet and outlet, and retractable locking pins are installed on the nylon adapters. After the nylon adapters are screwed into place, they can be locked and fixed by the locking pins and locking discs to prevent loosening and ensure the airtightness of the nylon adapter installation.
[0009] By setting a lever on the locking pin, the locking pin can be pushed and pulled. In addition, a combination of a sliding sleeve, a connecting strip, and a rubber ball is set on the lever. The rubber ball can be inserted into the nylon adapter, which can lock and fix the lever and the locking pin, thereby further improving the stability of the nylon adapter installation.
[0010] Furthermore, a sealing ring is embedded at the end of the nylon adapter near the air inlet, and the sealing ring abuts against the air inlet. The sealing ring enhances the seal between the nylon adapter and the air inlet or outlet.
[0011] Furthermore, one end of the spring is fixedly connected to the locking pin, and the other end of the spring is fixedly connected to the inner surface of the nylon adapter. The spring force can act on the locking pin, providing auxiliary rebound.
[0012] Furthermore, the guide rod is provided with ball bearings, which are slidably connected to the inner surface of the locking pin. The ball bearings reduce the relative friction between the guide rod and the locking pin.
[0013] Furthermore, a sliding sleeve is fitted onto the outer side of the lever body, and a connecting strip is fixedly connected to the sliding sleeve. A rubber retaining bead is fixedly connected to the end of the connecting strip, and the rubber retaining bead engages with a nylon adapter. The sliding sleeve, connecting strip, and rubber retaining bead provide auxiliary locking for the lever.
[0014] Furthermore, a magnetic ring is fixedly connected to the middle section of the lever, and the magnetic ring engages with the sliding sleeve. The magnetic ring serves to fix the initial position of the sliding sleeve.
[0015] A limiting piece is fixedly connected to the end of the lever, and the limiting piece and the lever are an integral structure. The limiting piece limits the travel of the sliding sleeve. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model.
[0017] Figure 2 This is an embodiment of the present utility model. Figure 1 A schematic diagram of a partial structure;
[0018] Figure 3 This is an embodiment of the present utility model. Figure 1 A partial structural front sectional view;
[0019] Figure 4 This is an embodiment of the present utility model. Figure 1 A magnified view of the local structure;
[0020] Figure 5 This is an embodiment of the present utility model. Figure 4 Enlarged view of point A.
[0021] The following detailed explanation illustrates the specific implementation methods:
[0022] The reference numerals in the accompanying drawings include: cylinder 1, air inlet 2, air outlet 3, locking disc 4, nylon adapter 5, sealing ring 6, locking pin 7, guide rod 8, spring 9, ball bearing 10, lever 11, sliding sleeve 12, connecting strip 13, rubber ball bearing 14, magnetic ring 15, and limit plate 16. Detailed Implementation
[0023] The basic implementation examples are as follows: Figures 1-5 The diagram shows an insulation device for the gas supply pipeline of an automatic furnace door for a calcium carbide furnace. It includes a cylinder 1, with an inlet 2 and an outlet 3 connected to the cylinder 1. A locking disc 4 is fixedly connected to both the inlet 2 and the outlet 3. A nylon adapter 5 is threadedly connected inside the inlet 2. A sealing ring 6 is embedded at the end of the nylon adapter 5 closest to the inlet 2, and the sealing ring 6 abuts against the inlet 2. The sealing ring 6 increases the sealing performance between the nylon adapter 5 and either the inlet 2 or the outlet 3.
[0024] like Figure 4 , Figure 5As shown, a locking pin 7 slides inside the nylon adapter 5, passing through and slidably connecting to the locking disc 4. A guide rod 8 is fixedly connected inside the nylon adapter 5, slidably connected to the locking pin 7. A spring 9 is sleeved on the outer side of the guide rod 8, with one end fixedly connected to the locking pin 7 and the other end fixedly connected to the inner surface of the nylon adapter 5. The elastic force of the spring 9 can act on the locking pin 7, providing auxiliary rebound. A ball bearing 10 is provided on the guide rod 8, slidably connected to the inner surface of the locking pin 7. The ball bearing 10 reduces the relative friction between the guide rod 8 and the locking pin 7.
[0025] like Figure 5 As shown, a lever 11 is fixedly connected to the pin body of the locking pin 7, and the lever 11 is slidably connected to the nylon adapter 5. A sliding sleeve 12 is fitted on the outer side of the lever 11, and a connecting strip 13 is fixedly connected to the sliding sleeve 12. A rubber bead 14 is fixedly connected to the end of the connecting strip 13, and the rubber bead 14 engages with the nylon adapter 5. The sliding sleeve 12, connecting strip 13, and rubber bead 14 provide auxiliary locking for the lever 11. A magnetic ring 15 is fixedly connected to the middle section of the lever 11, and the magnetic ring 15 attracts the sliding sleeve 12. The magnetic ring 15 provides initial position fixation for the sliding sleeve 12. A limiting piece 16 is fixedly connected to the end of the lever 11, and the limiting piece 16 and the lever 11 are an integral structure. The limiting piece 16 limits the travel of the sliding sleeve 12.
[0026] The specific implementation process of this utility model is as follows: In use, firstly, the nylon adapter 5 is threadedly installed at the air inlet 2 or air outlet 3 of the cylinder 1. After the nylon adapter 5 is screwed into place, the locking pin 7 is controlled by the lever 11, so that the locking pin 7 is inserted laterally into the locking disc 4. This can prevent the nylon adapter 5 from loosening. Finally, the sliding sleeve 12 is attracted to the magnetic ring 15 on the lever 11, and the rubber ball 14 at the end of the connecting strip 13 is inserted into the nylon adapter 5. This can lock and fix the lever 11 and the locking pin 7, thereby further improving the stability of the nylon adapter 5 installation. Subsequently, the pipe thread for the air inlet and outlet of the cylinder 1 is installed at the inner thread of the nylon adapter 5. The nylon adapter 5 has insulating properties, avoiding the phenomenon of electrical arcing caused by insulation problems, and avoiding equipment or production accidents caused by electrical breakdown of water supply equipment.
[0027] This solution adds nylon adapters 5 at the air inlet 2 and air outlet 3 of cylinder 1 for the transition between the air inlet 2 and air outlet 3 and the air pipe. The nylon adapters 5 have insulating properties, avoiding short circuits and sparking caused by insulation problems, and preventing equipment or production accidents caused by short circuits damaging the water supply equipment. In addition, locking discs 4 are installed at both the air inlet 2 and air outlet 3, and then a retractable locking pin 7 is installed on the nylon adapter 5. After the nylon adapter 5 is screwed into place, it can be locked and fixed by the locking pin 7 and the locking disc 4 to prevent loosening and ensure the sealing of the nylon adapter 5 installation.
[0028] A lever 11 is provided on the locking pin 7 to complete the push-pull action of the locking pin 7. In addition, a combination of a sliding sleeve 12, a connecting strip 13 and a rubber ball 14 is provided on the lever 11. The rubber ball 14 can be inserted into the nylon adapter 5, so that it can be adjusted.
[0029] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.
Claims
1. An insulation device for the gas supply pipeline of an automatic furnace door of a calcium carbide furnace, comprising a cylinder, characterized in that: The cylinder is equipped with an air inlet and an air outlet, both of which are fixedly connected to a locking disc. A nylon adapter is threaded into the air inlet, and a locking pin slides inside the nylon adapter. The locking pin passes through the locking disc and is slidably connected to it. A guide rod is fixedly connected inside the nylon adapter and is slidably connected to the locking pin. A spring is sleeved on the outside of the guide rod. A lever is fixedly connected to the locking pin and is slidably connected to the nylon adapter.
2. The automatic furnace door gas supply pipeline insulation device for a calcium carbide furnace according to claim 1, characterized in that: A sealing ring is embedded at the end of the nylon adapter near the air inlet, and the sealing ring abuts against the air inlet.
3. The automatic furnace door gas supply pipeline insulation device for a calcium carbide furnace according to claim 1, characterized in that: One end of the spring is fixedly connected to the locking pin, and the other end of the spring is fixedly connected to the inner surface of the nylon adapter.
4. The automatic furnace door gas supply pipeline insulation device for a calcium carbide furnace according to claim 1, characterized in that: The guide rod is provided with ball bearings, which are slidably connected to the inner surface of the locking pin.
5. The automatic furnace door gas supply pipeline insulation device for a calcium carbide furnace according to claim 1, characterized in that: The lever has a sliding sleeve on its outer side, and a connecting strip is fixedly connected to the sliding sleeve. A rubber bead is fixedly connected to the end of the connecting strip, and the rubber bead engages with a nylon adapter.
6. The automatic furnace door gas supply pipeline insulation device for a calcium carbide furnace according to claim 5, characterized in that: A magnetic ring is fixedly connected to the middle section of the lever, and the magnetic ring is attracted to the sliding sleeve.
7. An insulation device for the gas supply pipeline of an automatic furnace door of a calcium carbide furnace according to claim 5, characterized in that: The end of the lever is fixedly connected to a limiting piece, and the limiting piece and the lever are an integral structure.