A high torque explosion-proof motor

Abstract

The present invention discloses a high-torque explosion-proof motor, which relates to the technical field of explosion-proof motors. The motor includes a high-torque motor, and mounting rings for assembling an explosion-proof shell are arranged at both ends. The mounting ring and the explosion-proof shell are installed through a mounting structure, and a sealing structure is provided to provide sealed explosion-proof protection. The sealing structure includes a sealing outer ring foldably mounted on the outside of the mounting ring and a sealing inner ring on the inside of the explosion-proof shell, which automatically pops up after assembly to achieve sealed protection for the motor. When an explosion occurs inside the motor, the instantaneous expansion gas generated by the explosion is used to make the interlaced interference between the sealing inner ring and the sealing outer ring tighter, providing a tighter seal and better explosion-proof function. In addition, the mounting structure uses components such as a connecting rod and a fixing ring, and fixes the explosion-proof shell and the high-torque motor through threaded connection, while retaining a certain gap to provide a buffer function. This patent realizes the explosion-proof function of the high-torque motor through a specially designed sealing structure and mounting structure.

Description

Technical Field

[0001] The invention relates to explosion-proof motor technology, in particular to a high-torque explosion-proof motor. Background Art

[0002] It is well known that a high-torque explosion-proof motor is an electric motor with a large output torque that is specially designed for safe use in explosive environments. A high-torque explosion-proof motor is an electric motor that is specially designed to increase its output torque based on an ordinary explosion-proof motor. It is mainly used in places where there are harmful substances such as explosive gases and dust, such as chemical plants, mining sites, etc., to ensure that the motor can operate safely and stably in these environments and meet larger load requirements.

[0003] The deficiency of the prior art is that, in the installation process of the explosion-proof shell of the high-torque explosion-proof motor, the explosion-proof shell and the motor are generally installed and connected by setting fasteners. Therefore, the fasteners should have sufficient mechanical strength to ensure that when an explosion occurs inside the shell, it will not cause the breakage or loosening of fasteners such as bolts, and a sealing ring and other structures are set at the connection gap. However, this installation and connection method completely relies on the strength of the fasteners themselves to resist the expansion of the gas generated by the explosion to achieve the explosion-proof effect. The sealing rings set can only play a sealing effect and cannot play any fastening effect, resulting in excessive strength requirements for the fasteners themselves when installing the explosion-proof shell. Summary of the invention

[0004] The object of the present invention is to provide a high torque explosion-proof motor to solve the above-mentioned deficiencies in the prior art.

[0005] In order to achieve the above-mentioned object, the present invention provides the following technical solution: comprising a high-torque motor, wherein mounting rings for assembling an explosion-proof shell are arranged at both ends of the high-torque motor, wherein the mounting rings and both ends of the high-torque motor are integrally formed, and the mounting rings and the explosion-proof shell are installed via a mounting structure;

[0006] It also includes: a sealing structure disposed between the outer side of the mounting ring and the inner side of the explosion-proof shell, and providing sealing and explosion-proof protection after the mounting ring and the explosion-proof shell are assembled;

[0007] The sealing structure includes a sealing outer ring which is foldably mounted on the outside of a mounting ring and a sealing inner ring which is foldably mounted on the inside of an explosion-proof shell. The sealing outer ring and the sealing inner ring are automatically ejected after the mounting ring and the explosion-proof shell are assembled, thereby providing sealing protection for the high-torque motor. At the same time, in the event of an explosion inside the high-torque motor, the instantaneously expanding gas generated during the explosion is utilized to act on the explosion-proof shell, thereby making the interlaced interference between the sealing inner ring and the sealing outer ring tighter, providing a tighter seal inside the high-torque motor, and achieving a better explosion-proof function.

[0008] As a further description of the above technical solution: the sealing structure includes a sealing member A arranged inside the explosion-proof shell and a sealing member B arranged outside the mounting ring. After the mounting ring and the explosion-proof shell are installed, the sealing member A is ejected toward the inside of the explosion-proof shell by the squeezing of the outer squeezing balls in the resisting member A, and the sealing member B is deployed toward the outside of the mounting ring by the squeezing of the inner squeezing balls in the resisting member B.

[0009] Through the interference between the expanded seal B and the seal A, after the explosion-proof shell is installed at both ends of the high-torque motor, sealing protection is provided for the gap between the explosion-proof shell and the high-torque motor.

[0010] As a further description of the above technical solution: the sealing inner ring is arranged in a circular ring shape with a bottom end and a circular ring shape that shrinks inward at the top end, and two elastic semicircular inner elastic rings separated from each other are arranged at the circular ring position at the bottom end to connect to the inner wall of the explosion-proof shell. The sealing inner ring itself is in a circular ring shape and cannot actively shrink and expand by itself. The sealing inner ring itself has ductility. After the inner elastic ring is resisted by the resistance member A, the two inner elastic rings rotate to drive the sealing inner ring to pop out and shrink to the inside of the explosion-proof shell.

[0011] As a further description of the above technical solution: the sealing outer ring is arranged in a circular shape with a circular ring at the bottom and a top end expanding outward, and two elastic semicircular outer elastic rings separated from each other are arranged at the circular ring position at the bottom to connect to the surface of the mounting ring. The sealing outer ring itself is in a circular ring shape and cannot actively shrink and expand by itself. The sealing outer ring itself has ductility. After the outer elastic ring is resisted by the resistance piece B, the two outer elastic rings rotate to drive the sealing outer ring to pop out and expand outside the mounting ring.

[0012] Sealing structure - seal B: seal B includes an outer folding groove provided on the outside of the mounting ring for folding and accommodating the sealing outer ring. The inner side wall at one end of the outer folding groove is rotatably connected to the sealing outer ring through an outer elastic ring. When the explosion-proof shell and the mounting ring are assembled and sleeved, the sealing outer ring installed in the outer folding groove through the outer elastic ring is pressed against each other by the extrusion ring provided in the mounting ring and the clamping ring provided on the inner side of the explosion-proof shell. Under the rotation of the outer elastic ring, the sealing outer ring is unfolded from the outer folding groove;

[0013] When installing between the explosion-proof shell and the mounting ring, after the explosion-proof shell and the mounting ring are assembled, the extrusion ring extending outward from the top of the mounting ring will be squeezed by the clamping ring at the bottom end of the inner side of the explosion-proof shell, and the extrusion ring is inserted inwardly in the extrusion channel, thereby inserting into the outer folding groove through the inner extrusion ball and squeezing the sealing outer ring, so that the sealing outer ring is expanded outward from the outer folding groove under the action of the outer elastic ring, and meshed and sealed with the sealing inner ring.

[0014] Sealing structure - seal A: seal A includes an inner folding groove provided on the inner side of the explosion-proof shell for folding and storing the sealing inner ring. The inner wall at one end of the inner folding groove is rotatably connected to the sealing inner ring through an inner elastic ring. After the explosion-proof shell and the mounting ring are sleeved together, a connecting rod is inserted into the fixing ring. When the explosion-proof shell and the high-torque motor are fixedly installed, the connecting rod contacts the outer side of the sealing inner ring through the contact piece A, so that the sealing inner ring is contracted into the inner folding groove on the inner side of the explosion-proof shell under the rotation of the inner elastic ring at the bottom end, so that the sealing inner ring is meshed and contacted with the sealing outer ring, thereby realizing the sealing after the connection between the explosion-proof shell and the high-torque motor.

[0015] As a further description of the above technical solution: the resistance structure includes a resistance member A for resisting and ejecting the seal A and a resistance member B for resisting and ejecting the seal B, so that when installing between the mounting rings set at both ends of the explosion-proof shell and the high-torque motor, the seal A and the seal B are automatically ejected and resist each other to form a connection seal.

[0016] As a further description of the above technical solution: the power source of the resistance member A in the resistance structure is an installation structure for fastening the high torque motor to the explosion-proof shells arranged at both ends.

[0017] As a further description of the above technical solution: the power source of the resistance member B in the resistance structure is the extrusion force after the installation ring and the explosion-proof shell are tightly installed.

[0018] As a further description of the above technical solution: the contact plate provided in the contact member A is in an arc shape smaller than a quarter, so that the contact plate can be attached to the outer side of the annular sealing inner ring, so that when the contact plate contacts the outer side of the sealing inner ring, the sealing inner ring can be retracted inward as a whole and popped out;

[0019] The extrusion rings arranged in the abutment member B are in the shape of two arcs smaller than one half of a circle, and an extrusion channel having a shape and size matching that of the extrusion ring is also provided in the mounting ring.

[0020] Conflict structure - conflict member B: The conflict structure includes conflict member A and conflict member B;

[0021] The resistance member B includes an extrusion channel provided in the mounting ring, in which an extrusion ring is movably inserted via a reset spring, the top of the extrusion ring passes through the extrusion channel and extends to the outside of the mounting ring, the bottom of the extrusion ring is fixedly connected to an inner extrusion ball which is in resistance connection with the bottom of the sealing inner ring, the extrusion ring is detachably connected to the resistance connection clamping ring, and the clamping ring is fixedly arranged on the inner side of the end of the explosion-proof shell away from the high-torque motor, so that when the explosion-proof shell is installed, after the mounting ring contacts the explosion-proof shell, the clamping ring squeezes the extrusion ring, thereby achieving resistance to the sealing outer ring and launching the seal.

[0022] When the explosion-proof shell is installed on the outside of the mounting ring, after the mounting ring and the explosion-proof shell are fitted together, the clamping ring arranged on the inner side of the explosion-proof shell will squeeze the extrusion ring on the top of the mounting ring. After being squeezed, the extrusion ring is inserted into the extrusion channel and stretches the reset spring, so that the extrusion ring contacts the inner extrusion ball of the sealing outer ring to squeeze the sealing outer ring. Under the action of the outer elastic ring, the sealing outer ring is popped out and expanded outward, so as to realize the meshing connection between the sealing outer ring and the sealing inner ring, thereby realizing sealing protection.

[0023] Resistance structure - resistance part A: Resistance part A includes an outer squeezing ball arranged on one side of the fixed ring connected to the explosion-proof shell, the bottom end of the outer squeezing ball is fixedly connected with a push rod which passes through the fixed ring and is inserted into the inner side of the explosion-proof shell, the bottom end of the push rod is fixedly connected to a resistance plate, the inner side of the resistance plate fits against the outer side of the sealing inner ring, so that after the connecting rod is inserted into the fixed ring, the connecting rod itself squeezes the outer squeezing ball and the resistance plate is inserted into the explosion-proof shell through the push rod and squeezes the sealing inner ring, thereby squeezing the sealing inner ring inward and shrinking it to expand and provide a sealing effect.

[0024] As a further description of the above technical solution: both ends of the connecting rod for connecting the two sets of explosion-proof shells and the high-torque motor arranged in the installation structure are provided with threads.

[0025] When the explosion-proof shell and the mounting ring are completely tightly connected and fitted, the gap between the explosion-proof shell and the high-torque motor reaches a minimum position, and a separation dislocation is formed between the sealing inner ring that is retracted and popped outward and the sealing outer ring that is expanded outward, so as to realize the rapid disassembly function of the explosion-proof shell, and the disassembly of the explosion-proof shell will not be affected by the conflict between the sealing inner ring and the sealing outer ring;

[0026] The high torque motor has mounting rings integrally formed at both ends, and an explosion-proof shell is detachably mounted on the outside of the mounting ring through a mounting structure;

[0027] Installation structure: The installation structure includes a fixing ring fixedly installed around the outside of the explosion-proof shell. After the explosion-proof shell is fixedly sleeved on both ends of the high-torque motor, both ends of the connecting rod are inserted into the fixing ring and threadedly connected to both ends of the connecting rod through nuts. The two ends of the connecting rod are threadedly connected and fixed, and the nuts and the threads at both ends of the connecting rod are twisted to a separated state to realize the characteristics of the high-torque explosion-proof motor. A certain gap needs to be reserved between the installation of the explosion-proof shells at both ends and the high-torque motor body. It only needs to control the gap of the joint to be smaller than the maximum safe gap of the flammable gas in the experiment. While providing explosion-proof, it can also provide a buffering function between the explosion-proof shell and the high-torque motor;

[0028] During the installation process, after the explosion-proof shell is sleeved on the outside of the mounting rings set at both ends of the high-torque motor, the connecting rod is inserted into multiple positions and fixed rings of matching sizes set around the outside of the explosion-proof shell, and the nut is taken out. After the threads at both ends of the connecting rod are tightened, the nut and the thread are twisted to separate them. At this time, the connecting rod cooperates with the fixing ring and the nut to fix the explosion-proof shell and the high-torque motor, and a certain gap is retained at the connection between the explosion-proof shell and the high-torque motor.

[0029] The beneficial effects of the present invention are as follows:

[0030] 1. Solve the problem of excessive fastener strength requirements in the prior art:

[0031] By designing a special sealing structure and abutment structure, the installation between the explosion-proof housing and the high-torque motor no longer completely depends on the strength of the fasteners. The automatic ejection of the sealing outer ring and the sealing inner ring and the tight contact between them provide additional protection for the explosion-proof function, thereby reducing the dependence on the strength of the fasteners;

[0032] 2. Provides a tighter sealing effect:

[0033] The sealing structure in the patent includes a foldable sealing outer ring and a sealing inner ring, which can automatically pop out and tightly contact each other after installation to form an effective sealing protection. Especially when an explosion occurs inside the motor, the instantaneous expansion gas generated by the explosion will make the contact between the sealing inner ring and the sealing outer ring tighter, providing a tighter sealing effect;

[0034] 3. The quick disassembly function of the explosion-proof shell is realized:

[0035] The patented design allows for a separation dislocation between the inwardly contracted sealing inner ring and the outwardly expanded sealing outer ring when the explosion-proof housing and the mounting ring are completely tightly connected. This design does not affect the disassembly of the explosion-proof housing due to the conflict between the sealing inner ring and the sealing outer ring, thus achieving the rapid disassembly function of the explosion-proof housing.

[0036] 4. Provides buffering function:

[0037] The installation structure in the patent allows a certain gap to be maintained between the explosion-proof housing and the high-torque motor, which is smaller than the maximum safe gap of the flammable gas in the experiment. This design not only provides explosion-proof function, but also provides a buffer between the explosion-proof housing and the high-torque motor, reducing the impact of external shock on the motor;

[0038] 5. Improved installation efficiency and convenience:

[0039] The patented interference structure and sealing structure are automatically popped up, without the need for additional installation steps or tools. This greatly improves installation efficiency and convenience and reduces installation costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0041] Figure 1 A schematic diagram of the overall structure of a high torque explosion-proof motor provided by an embodiment of the present invention;

[0042] Figure 2 A schematic diagram of the structure of an explosion-proof housing and a mounting ring provided in an embodiment of the present invention;

[0043] Figure 3 A schematic diagram of the structure of an explosion-proof housing provided by an embodiment of the present invention;

[0044] Figure 4 A schematic diagram of the structure of a connecting rod provided in an embodiment of the present invention;

[0045] Figure 5 A schematic diagram of the structure of a fixing ring provided in an embodiment of the present invention;

[0046] Figure 6 A schematic structural diagram of the cross section of an explosion-proof housing and a mounting ring provided in an embodiment of the present invention;

[0047] Figure 7 A schematic diagram of the structure of a sealing inner ring and a sealing outer ring provided in an embodiment of the present invention;

[0048] Figure 8 A schematic diagram of the structure of the separated sealing inner ring and sealing outer ring in the expanded limited state provided by an embodiment of the present invention;

[0049] Fig. 9 A schematic structural diagram of a combined sealing inner ring and sealing outer ring in an expanded limited state provided by an embodiment of the present invention;

[0050] Fig.10 The embodiment of the present invention provides Figure 8 Enlarged view of point A in the middle.

[0051] Description of reference numerals:

[0052] 1-High torque motor; 5-Mounting ring; 6-Explosion-proof shell

[0053] Installation structure: 2-connecting rod; 3-fixing ring; 4-nut

[0054] Conflict Structure

[0055] Resistance part A: 7-external extrusion ball; 8-resistance plate; 10-thrust rod

[0056] Resistance member B: 12-extrusion ring; 13-extrusion channel; 18-reset spring; 19-clamp ring; 20-inner extrusion ball

[0057] Sealed structure

[0058] Seal A: 9-seal inner ring; 14-inner elastic ring; 15-inner folding groove

[0059] Seal B: 11-seal outer ring; 16-outer folding groove; 17-outer elastic ring DETAILED DESCRIPTION

[0060] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0061] See also Figure 1-Figure 10 The embodiment of the present invention provides a technical solution for a high-torque explosion-proof motor: comprising a high-torque motor 1, wherein mounting rings 5 ​​for assembling an explosion-proof shell 6 are arranged at both ends of the high-torque motor 1, wherein the mounting ring 5 and both ends of the high-torque motor 1 are integrally formed, and the mounting ring 5 and the explosion-proof shell 6 are installed through a mounting structure;

[0062] The connecting rod 2 provided in the installation structure and used to connect the two sets of explosion-proof shells 6 and the high-torque motor 1 is provided with threads at both ends;

[0063] The high torque motor 1 has mounting rings 5 ​​integrally formed at both ends, and an explosion-proof shell 6 is detachably mounted on the outer side of the mounting ring 5 through a mounting structure;

[0064] Installation structure: The installation structure includes a fixing ring 3 fixedly installed around the outer side of the explosion-proof shell 6. After the explosion-proof shell 6 is fixedly sleeved on both ends of the high-torque motor 1, both ends of the connecting rod 2 are inserted into the fixing ring 3 and threadedly connected to both ends of the connecting rod 2 through nuts 4. The two ends of the connecting rod 2 are threadedly connected and fixed, and the nuts 4 and the threads at both ends of the connecting rod 2 are twisted to a separated state to realize the characteristics of the high-torque explosion-proof motor. A certain gap needs to be reserved between the installation of the explosion-proof shells 6 at both ends and the body of the high-torque motor 1. It is only necessary to control the gap in the joint to be smaller than the maximum safe gap of the combustible gas in the experiment. While providing explosion-proof, it can also provide a buffering function between the explosion-proof shell 6 and the high-torque motor 1;

[0065] During the installation process, after the explosion-proof shell 6 is sleeved on the outside of the mounting ring 5 set at both ends of the high-torque motor 1, the connecting rod 2 is inserted into the fixing rings 3 of multiple positions and sizes set around the outside of the explosion-proof shell 6, and the nut 4 is taken out. After the threads at both ends of the connecting rod 2 are tightened, the nut 4 is twisted and separated from the thread. At this time, the connecting rod 2 cooperates with the fixing ring 3 and the nut 4 to limit the explosion-proof shell 6 and the high-torque motor 1, and a certain gap is retained at the connection between the explosion-proof shell 6 and the high-torque motor 1.

[0066] In another embodiment provided by the present invention, preferably, the resistance structure includes a resistance member A for resisting and ejecting the seal member A and a resistance member B for resisting and ejecting the seal member B, so that when installing between the explosion-proof shell 6 and the mounting ring 5 set at both ends of the high-torque motor 1, the seal member A and the seal member B are automatically ejected and resist each other to connect and seal.

[0067] In another embodiment provided by the present invention, the power source of the resistance member A in the resistance structure is an installation structure for fastening the high torque motor 1 and the explosion-proof shells 6 provided at both ends.

[0068] In another embodiment provided by the present invention, the power source of the resistance member B in the resistance structure is the squeezing force after the mounting ring 5 and the explosion-proof shell 6 are tightly mounted.

[0069] In another embodiment provided by the present invention, the contact plate 8 provided in the contact member A is in an arc shape smaller than a quarter, so that the contact plate 8 can be attached to the outside of the annular sealing inner ring 9, and when the contact plate 8 contacts the outside of the sealing inner ring 9, the sealing inner ring 9 can be contracted inward as a whole and popped out;

[0070] The extrusion rings 12 provided in the abutment member B are in the shape of two arcs smaller than one half of a circle, and an extrusion channel 13 having a shape and size matching that of the extrusion ring 12 is also provided in the mounting ring 5 .

[0071] Conflict structure - conflict member B: The conflict structure includes conflict member A and conflict member B;

[0072] The resistance member B includes an extrusion channel 13 provided in the mounting ring 5, in which an extrusion ring 12 is movably inserted via a reset spring 18, a top end of the extrusion ring 12 passes through the extrusion channel 13 and extends to the outside of the mounting ring 5, a bottom end of the extrusion ring 12 is fixedly connected to an inner extrusion ball 20 which is in resistance connection with the bottom end of the sealing inner ring 9, the extrusion ring 12 is detachably connected to the resistance connection snap ring 19, and the snap ring 19 is fixedly arranged on the inner side of the end of the explosion-proof shell 6 away from the high-torque motor 1, so that when the explosion-proof shell 6 is installed, after the mounting ring 5 contacts the explosion-proof shell 6, the snap ring 19 squeezes the extrusion ring 12, thereby achieving resistance to the sealing outer ring 11 and launching a seal.

[0073] When the explosion-proof shell 6 is installed on the outside of the mounting ring 5, after the mounting ring 5 and the explosion-proof shell 6 are fitted together, the clamping ring 19 arranged on the inner side of the explosion-proof shell 6 will squeeze the extrusion ring 12 on the top of the mounting ring 5. After being squeezed, the extrusion ring 12 is inserted into the extrusion channel 13 and stretches the reset spring 18, so that the extrusion ring 12 contacts the inner extrusion ball 20 of the sealing outer ring 11 to squeeze the sealing outer ring 11. Under the action of the outer elastic ring 17, the sealing outer ring 11 is popped outward and expanded, so as to realize the meshing connection between the sealing outer ring 11 and the sealing inner ring 9, thereby realizing sealing protection.

[0074] The resistance structure - resistance member A: the resistance member A comprises an outer squeezing ball 7 arranged on the side of the fixed ring 3 connected to the explosion-proof shell 6, the bottom end of the outer squeezing ball 7 is fixedly connected with a push rod 10 which penetrates the fixed ring 3 and is inserted into the inner side of the explosion-proof shell 6, the bottom end of the push rod 10 is fixedly connected with a resistance plate 8, the inner side of the resistance plate 8 is fitted to the outer side of the sealing inner ring 9, so that after the connecting rod 2 is inserted into the fixing ring 3, the connecting rod 2 squeezes the outer squeezing ball 7 due to its own size, and the resistance plate 8 is inserted into the explosion-proof shell 6 and squeezes the sealing inner ring 9 through the push rod 10, thereby squeezing the sealing inner ring 9 to shrink inwards and expand to provide a sealing effect;

[0075] After the connecting rod 2 is inserted into the fixing ring 3, since the sizes of the connecting rod 2 and the fixing ring 3 are adapted, after the connecting rod 2 is inserted, the surface of the connecting rod 2 will squeeze the outer extrusion ball 7, thereby squeezing the outer extrusion ball 7 from the inside to the outside of the fixing ring 3, and the outer extrusion ball 7 squeezes the contact plate 8 inwardly through the push rod 10, and the contact plate 8 rotates and pops out the fitting sealing inner ring 9 to the inside of the explosion-proof shell 6 under the action of the inner elastic ring 14 and shrinks, and cooperates with the contact between the sealing outer ring 11 that is expanded outward to provide sealing protection.

[0076] In another embodiment provided by the present invention, a sealing structure is provided between the outer side of the mounting ring 5 and the inner side of the explosion-proof shell 6 to provide a sealed explosion-proof protection after the mounting ring 5 and the explosion-proof shell 6 are assembled;

[0077] The sealing structure includes a sealing outer ring 11 which is foldably mounted on the outside of the mounting ring 5 and a sealing inner ring 9 which is foldably mounted on the inside of the explosion-proof shell 6. The sealing outer ring 11 and the sealing inner ring 9 are automatically ejected after the mounting ring 5 and the explosion-proof shell 6 are assembled, thereby providing sealing protection for the high-torque motor 1. At the same time, in the event of an explosion inside the high-torque motor 1, the instantaneous expansion of the gas generated during the explosion is utilized to act on the explosion-proof shell 6, thereby making the interlaced interference between the sealing inner ring 9 and the sealing outer ring 11 tighter, providing a tighter seal to the inside of the high-torque motor 1, and achieving a better explosion-proof function.

[0078] In another embodiment provided by the present invention, the sealing structure includes a sealing member A disposed inside the explosion-proof shell 6 and a sealing member B disposed outside the mounting ring 5. After the mounting ring 5 and the explosion-proof shell 6 are installed, the sealing member A is ejected toward the inside of the explosion-proof shell 6 by the squeezing of the outer squeezing ball 7 in the resisting member A, and the sealing member B is expanded toward the outside of the mounting ring 5 by the squeezing of the inner squeezing ball 20 in the resisting member B.

[0079] Through the interference between the expanded seal B and the seal A, after the explosion-proof shell 6 is installed at both ends of the high-torque motor 1, sealing protection is provided for the gap between the explosion-proof shell 6 and the high-torque motor 1.

[0080] In another embodiment provided by the present invention, the sealing inner ring 9 is configured to be annular at the bottom and annular at the top, and two semicircular inner elastic rings 14 separated from each other with elasticity are arranged at the bottom annular position to connect to the inner wall of the explosion-proof shell 6. The sealing inner ring 9 itself is annular and cannot actively shrink and expand by itself. The sealing inner ring 9 itself has ductility. After the inner elastic ring 14 is resisted by the resistance member A, the two inner elastic rings 14 rotate to drive the sealing inner ring 9 to pop out and shrink toward the inside of the explosion-proof shell 6.

[0081] In another embodiment provided by the present invention, the sealing outer ring 11 is configured to be in the shape of a ring with a bottom end in a circular ring shape and a top end expanding outward, and two semicircular outer elastic rings 17 separated from each other with elasticity are provided at the bottom circular ring position to connect to the surface of the mounting ring 5. The sealing outer ring 11 itself is in the shape of a ring and cannot actively shrink and expand by itself. The sealing outer ring 11 itself has ductility. After the outer elastic ring 17 is resisted by the resistance member B, the two outer elastic rings 17 rotate to drive the sealing outer ring 11 to pop out and expand to the outside of the mounting ring 5.

[0082] Sealing structure - seal B: seal B includes an outer folding groove 16 provided on the outside of the mounting ring 5 for folding and accommodating the sealing outer ring 11. The inner side wall at one end of the outer folding groove 16 is rotatably connected to the sealing outer ring 11 through an outer elastic ring 17. When the explosion-proof shell 6 and the mounting ring 5 are assembled and sleeved, the sealing outer ring 11 installed in the outer folding groove 16 through the outer elastic ring 17 is unfolded from the outer folding groove 16 by the rotation of the outer elastic ring 17 through the contact and extrusion between the extrusion ring 12 provided in the mounting ring 5 and the clamping ring 19 provided on the inner side of the explosion-proof shell 6;

[0083] When installing between the explosion-proof shell 6 and the mounting ring 5, after the explosion-proof shell 6 and the mounting ring 5 are assembled, the extrusion ring 12 extending outward from the top of the mounting ring 5 will be squeezed by the clamping ring 19 at the bottom end of the inner side of the explosion-proof shell 6, and the extrusion ring 12 is inserted inwardly in the extrusion channel 13, so that the sealing outer ring 11 is inserted into the outer folding groove 16 through the inner extrusion ball 20 and squeezes the sealing outer ring 11, so that the sealing outer ring 11 is expanded outward from the outer folding groove 16 under the action of the outer elastic ring 17, and the sealing inner ring 9 is engaged and sealed.

[0084] Sealing structure - seal A: seal A includes an inner folding groove 15 provided on the inner side of the explosion-proof shell 6 for folding and storing the sealing inner ring 9. The inner side wall at one end of the inner folding groove 15 is rotatably connected to the sealing inner ring 9 through the inner elastic ring 14. After the explosion-proof shell 6 and the mounting ring 5 are sleeved, the connecting rod 2 is inserted into the fixing ring 3. When the explosion-proof shell 6 and the high-torque motor 1 are fixedly installed, the connecting rod 2 contacts the outer side of the sealing inner ring 9 through the contact member A, so that the sealing inner ring 9 is contracted into the inner folding groove 15 on the inner side of the explosion-proof shell 6 under the rotation of the inner elastic ring 14 at the bottom end, so that the sealing inner ring 9 is meshed and contacted with the sealing outer ring 11, so as to achieve sealing after the connection between the explosion-proof shell 6 and the high-torque motor 1;

[0085] After the explosion-proof shell 6 is installed on the outside of the mounting ring 5, the connecting rod 2 is inserted into the fixing ring 3. The connecting rod 2 will squeeze the outer squeezing ball 7 in the fixing ring 3 due to its own size, and the multiple fixing rings 3 around the outside of the explosion-proof shell 6 are all inserted with the connecting rod 2, so that the multiple outer squeezing balls 7 drive the contact plate 8 to squeeze into the explosion-proof shell 6 through the top rod 10, so that the sealing inner ring 9 in the inner folding groove 15 opened in the explosion-proof shell 6 is rotated and folded toward the inside of the explosion-proof shell 6 under the rotation of the inner elastic ring 14 at the bottom end;

[0086] At this time, the sealing inner ring 9 and the sealing outer ring 11 are staggered. During the use of the high-torque motor 1, in order to reflect the explosion-proof requirements, a certain gap needs to be set at the connection between the explosion-proof shell 6 and the high-torque motor 1, and it is only necessary to control the joint gap to be smaller than the maximum safe gap of the combustible gas in the experiment. When the gap set here reaches the maximum limit distance, the sealing inner ring 9 and the sealing outer ring 11 are tightly engaged, which can provide sealing protection between the high-torque motor 1 and the explosion-proof shell 6. When the set gap reaches the minimum limit distance, the sealing inner ring 9 and the sealing outer ring 11 are staggered, but are separated from each other, so the gap can be kept smaller than the maximum safe gap of the combustible gas in the experiment.

[0087] In another embodiment provided by the present invention, preferably, when the explosion-proof shell 6 and the mounting ring 5 are completely tightly connected and fit together, the gap between the explosion-proof shell 6 and the high-torque motor 1 reaches a minimum position, and a separation is formed between the sealing inner ring 9 that shrinks and pops outward and the sealing outer ring 11 that expands outward, so as to realize the quick disassembly function of the explosion-proof shell 6, and the disassembly of the explosion-proof shell 6 will not be affected by the conflict between the sealing inner ring 9 and the sealing outer ring 11.

[0088] It should be noted that even when the high-torque motor 1 is in use, after the external flammable gas enters the high-torque motor 1 through the gap between the explosion-proof shell 6 and the high-torque motor 1, it encounters an electric spark and is ignited to cause an explosion. The expansion of the gas generated at the moment of the explosion will squeeze the explosion-proof shell 6 outward. At this time, the sealing inner ring 9 arranged on the inner side of the explosion-proof shell 6 and the sealing outer ring 11 arranged on the outer side of the mounting ring 5 are tightly meshed, providing a tight seal between the explosion-proof shell 6 and the mounting ring 5, which can ensure the automatic sealing inside the high-torque motor 1 and prevent the explosive material from being discharged from the connection gap. At the same time, the sealing inner ring 9 and the sealing outer ring 11 that are tightly meshed with each other can seal the explosion-proof shell 6 and the mounting ring 5. It provides a reinforced connection effect, and cooperates with the fixation between the connecting rod 2, the nut 4 and the fixing ring 3, so that the connection between the explosion-proof shell 6, the mounting ring 5 and the high-torque motor 1 is more secure, preventing the explosion-proof shell 6 from being ejected after the explosion, causing the explosive to be discharged from the inside of the high-torque motor 1 and causing danger, and after the explosion, the sealing inner ring 9 and the sealing outer ring 11 will seal the inside of the high-torque motor 1 to keep it difficult for outside air to enter, thereby keeping the inside of the high-torque motor 1 without any air entering, and can isolate the high-torque motor 1 from the outside air, so as to provide oxygen isolation for the flames generated by the explosion to achieve the effect of extinguishing the fire, prevent spontaneous combustion in the high-torque motor 1, and have better safety.

[0089] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A high-torque explosion-proof motor, comprising a high-torque motor (1), wherein mounting rings (5) for assembling an explosion-proof shell (6) are arranged at both ends of the high-torque motor (1), wherein the mounting ring (5) and the two ends of the high-torque motor (1) are integrally formed, and the mounting ring (5) and the explosion-proof shell (6) are mounted via a mounting structure, characterized in that: It also includes: a sealing structure arranged between the outer side of the mounting ring (5) and the inner side of the explosion-proof shell (6) to provide sealing and explosion-proof protection after the mounting ring (5) and the explosion-proof shell (6) are assembled; The sealing structure comprises a sealing outer ring (11) foldably mounted on the outside of a mounting ring (5) and a sealing inner ring (9) foldably mounted on the inside of an explosion-proof shell (6). After the mounting ring (5) and the explosion-proof shell (6) are assembled, the sealing outer ring (11) and the sealing inner ring (9) are automatically ejected, thereby providing sealing protection for the high-torque motor (1). At the same time, in the event of an explosion inside the high-torque motor (1), the gas that instantly expands during the explosion is used to act on the explosion-proof shell (6), thereby making the interlaced interference between the sealing inner ring (9) and the sealing outer ring (11) tighter, providing a tighter seal inside the high-torque motor (1), and achieving a better explosion-proof function. The sealing structure comprises a sealing member A arranged on the inner side of the explosion-proof shell (6) and a sealing member B arranged on the outer side of the mounting ring (5); after the mounting ring (5) and the explosion-proof shell (6) are installed, the sealing member A is ejected toward the inner side of the explosion-proof shell (6) by the squeezing of the outer squeezing ball (7) in the resisting member A, and the sealing member B is simultaneously expanded toward the outer side of the mounting ring (5) by the squeezing of the inner squeezing ball (20) in the resisting member B; The resistance structure comprises a resistance member A for resisting and ejecting the sealing member A and a resistance member B for resisting and ejecting the sealing member B, so that when the explosion-proof housing (6) and the mounting rings (5) arranged at both ends of the high-torque motor (1) are installed, the sealing member A and the sealing member B are automatically ejected and resistively connected to form a seal.

2. A high torque explosion-proof motor according to claim 1, characterized in that: Through the interference between the expanded seal B and the seal A, after the explosion-proof shell (6) is installed at both ends of the high-torque motor (1), sealing protection is provided for the gap between the explosion-proof shell (6) and the high-torque motor (1).

3. A high torque explosion-proof motor according to claim 2, characterized in that: The power source of the conflicting member A in the conflicting structure is a mounting structure for fastening the high torque motor (1) and the explosion-proof housing (6) provided at both ends.

4. A high torque explosion-proof motor according to claim 3, characterized in that: The power source of the resistance member B in the resistance structure is the squeezing force after the installation ring (5) and the explosion-proof shell (6) are tightly installed.

5. A high torque explosion-proof motor according to claim 4, characterized in that: The sealing inner ring (9) is arranged in a circular ring shape at the bottom and in a circular ring shape at the top, and two semicircular inner elastic rings (14) separated from each other with elasticity are arranged at the circular ring position at the bottom to connect to the inner wall of the explosion-proof shell (6). The sealing inner ring (9) itself is in a circular ring shape and cannot actively shrink and expand by itself. The sealing inner ring (9) itself has ductility. After the inner elastic ring (14) is resisted by the resisting member A, the two inner elastic rings (14) rotate to drive the sealing inner ring (9) to pop out and shrink toward the inside of the explosion-proof shell (6).

6. A high torque explosion-proof motor according to claim 5, characterized in that: The sealing outer ring (11) is arranged in a circular ring shape with a bottom end in a circular ring shape and a top end expanding outwardly, and two semicircular outer elastic rings (17) separated from each other and having elasticity are arranged at the bottom circular ring position to connect to the surface of the mounting ring (5). The sealing outer ring (11) itself is in a circular ring shape and cannot actively shrink and expand by itself. The sealing outer ring (11) itself has ductility. After the outer elastic ring (17) is resisted by the resisting member B, the two outer elastic rings (17) rotate to drive the sealing outer ring (11) to pop out and expand outside the mounting ring (5).

7. A high torque explosion-proof motor according to claim 6, characterized in that: The connecting rod (2) provided in the installation structure and used to connect the two sets of explosion-proof shells (6) and the high-torque motor (1) is provided with threads at both ends.

8. A high torque explosion-proof motor according to claim 7, characterized in that: The contact plate (8) provided in the contact member A is in the shape of an arc less than one quarter of a circle, so that the contact plate (8) can be fitted on the outside of the annular sealing inner ring (9), so that when the contact plate (8) contacts the outside of the sealing inner ring (9), the sealing inner ring (9) can be entirely contracted inwards and ejected; The extrusion ring (12) arranged in the abutment member B is in the shape of two arcs smaller than one half, and an extrusion channel (13) having a shape and size matching that of the extrusion ring (12) is also provided in the mounting ring (5).

9. A high torque explosion-proof motor according to claim 8, characterized in that: When the explosion-proof shell (6) and the mounting ring (5) are completely tightly connected and fitted, the gap between the explosion-proof shell (6) and the high-torque motor (1) reaches a minimum position, and a separation dislocation is formed between the sealing inner ring (9) that is retracted and ejected inward and the sealing outer ring (11) that is expanded outward, so as to realize the rapid disassembly function of the explosion-proof shell (6), and the disassembly of the explosion-proof shell (6) will not be affected by the conflict between the sealing inner ring (9) and the sealing outer ring (11).

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