Kettle tooth locking device of still kettle

Abstract

The utility model belongs to the technical field of still kettles, and particularly relates to a still kettle tooth locking device which comprises a kettle body assembly and a kettle body assembly, wherein the kettle body assembly comprises a shell, a kettle cover mounted at an opening of the shell and an open groove formed in the bottom of the shell and used for clamping the kettle cover; the kettle body assembly is arranged on the shell and comprises a steam inlet pipeline connected to the shell and a piston cylinder connected to the bottom end of the steam inlet pipeline and located below the kettle cover. According to the kettle body assembly, the internal pressure of the shell is communicated with the pressure of the piston cylinder through the steam inlet pipeline, and when the internal pressure of the shell rises, the locking rod on the piston cylinder is driven to protrude, so that the locking rod is inserted into the topmost end of the positioning hole, and then the threaded rod is inserted to lock the locking rod and block the exhaust hole; the kettle cover can be automatically locked according to the internal pressure of the shell and is separated after exhausting, monitoring is not needed, and the kettle is safer and more stable.

Description

Technical Field

[0001] The utility model relates to the technical field of autoclaves, in particular to an autoclave tooth locking device. Background Art

[0002] An autoclave, also known as a steam curing kettle or autoclave, is a large pressure vessel with a large volume and heavy weight. Autoclaves are widely used in the steam curing of building materials such as aerated concrete blocks, concrete pipe piles, lime-sand bricks, coal ash bricks, micro-porous calcium silicate boards, new lightweight wall materials, heat-insulating asbestos boards, high-strength gypsum, etc. At the same time, they are also widely applicable to the steam curing production process of rubber products, wood drying and anti-corrosion treatment, heavy metal smelting, oil immersion and coal infiltration of refractory bricks, steam curing of composite glass, high-pressure treatment of chemical fiber products, high-temperature and high-pressure treatment of food cans, pulp cooking, cable vulcanization, fishing net shaping, as well as production projects in the chemical, pharmaceutical, aerospace industries, heat-insulating materials, textile industries, military industries, etc. that require pressure steam curing production processes.

[0003] The existing autoclave interlock device requires manual operation of the safety handle, but the limit plate on the safety handle cannot ensure that the kettle cover is completely closed in place. During the operation of the autoclave, if the operator neglects to insert the bolt and the autoclave teeth are not engaged in place, there is a risk that the kettle cover will fly out and explode. Moreover, when venting and opening the kettle cover, it is necessary to manually read the pressure gauge value. Due to errors in the pressure gauge, even if the pressure shows zero, there may still be residual pressure inside the kettle, and there is also a risk of opening the kettle cover at this time.

[0004] The existing automatic safety interlock device is a relatively complex mechatronic system. The operating environment of the autoclave is usually relatively harsh, and factors such as high temperature and pressure, alternating loads, dust, and accumulated water will affect the reliability of the safety interlock device. The common position switch is a mechanical travel switch, which needs to be in direct contact with the kettle cover and the kettle body. High temperature and frequent operation cause the switch components to be extremely prone to aging and damage and failure. The structure of the hand-operated speed reducer with an internal check mechanism and an electromagnetic actuator is precise and is also prone to damage and failure. Moreover, the internal mechanism operating state cannot be observed without disassembly. Once the internal actuator (locking mechanism) fails and the kettle cover can rotate freely and the bolt is not inserted, there is a risk that the kettle cover will fly out and explode.

[0005] It is difficult for the above methods to completely solve the problem of safety locking. Therefore, we propose an autoclave tooth locking device. Summary of the Invention

[0006] The utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0007] Therefore, the technical solution adopted by the utility model is as follows:

[0008] An autoclave tooth locking device includes: a kettle body assembly and a locking assembly; wherein, the kettle body assembly includes a housing, a kettle cover installed at the opening of the housing, and a slot opened at the bottom of the housing for the kettle cover to engage; the locking assembly is arranged on the housing, and the kettle body assembly includes a steam inlet pipe connected to the housing, a piston cylinder connected to the bottom end of the steam inlet pipe and located below the kettle cover, a sewage valve connected to the steam inlet pipe and located at the bottom of the piston cylinder, a locking rod arranged on the piston cylinder, a jack opened at the bottom of the housing for the locking rod to pass through, a positioning hole opened at the bottom of the kettle cover for the locking rod to be inserted and fixed, an exhaust hole opened in the kettle cover and penetrating the positioning hole, a threaded rod threadedly connected in the exhaust hole, and a locking hole opened in the locking rod for the threaded rod to pass through.

[0009] In a preferred example of the present utility model, it can be further configured that: a pressure gauge is also provided on the steam inlet pipe.

[0010] In a preferred example of the present utility model, it can be further configured that: the positioning hole is a tower-shaped inclined stepped hole, and the top of the positioning hole is adapted to the top end of the locking rod.

[0011] In a preferred example of the present utility model, it can be further configured that: a sealing gasket is provided between the housing and the kettle cover.

[0012] In a preferred example of the present utility model, it can be further configured that: a sealing head is fixed to the inner end of the threaded rod.

[0013] In a preferred example of the present utility model, it can be further configured that: the exhaust hole and the locking hole are located at the same horizontal position.

[0014] The above technical solution of the present utility model has the following beneficial technical effects:

[0015] 1. Through the kettle body assembly of the present utility model, the internal pressure of the housing is communicated with the pressure of the piston cylinder by using the steam inlet pipe. When the pressure inside the housing rises, it will drive the locking rod on the piston cylinder to protrude, and then the locking rod is inserted into the topmost end of the positioning hole. Then, the threaded rod is inserted to lock the locking rod and block the exhaust hole, and the kettle cover can be automatically locked according to the internal pressure of the housing. After exhausting, it can be disengaged in this way without monitoring, which is safer and more stable.

[0016] 2. Through the kettle body assembly of the present utility model, when the pressure inside the housing drops and the door needs to be opened, first unscrew the threaded rod. The internal pressure of the housing enters the positioning hole through the exhaust hole and slowly discharges from the slot. At the same time, the locking rod retracts. At this time, under the action of the inclined surface of the positioning hole, the kettle cover is pressed and inclined, and the gap between the kettle cover and the housing will gradually increase, accelerating the pressure discharge. In this way, until the locking rod disengages from the kettle cover, it effectively accelerates the discharge of the internal pressure of the housing, quickly opens the door, and ensures safety at the same time. Brief Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of the autoclave tooth locking device of the present utility model;

[0018] Figure 2 It is a schematic structural diagram of the locking assembly of the present utility model.

[0019] Reference Numerals:

[0020] 100, autoclave body assembly; 110, housing; 111, sealing gasket; 120, autoclave cover; 130, slotted opening;

[0021] 200, locking assembly; 210, steam inlet pipe; 211, pressure gauge; 220, piston cylinder; 230, blowdown valve; 240, locking rod; 250, jack; 260, positioning hole; 270, exhaust hole; 280, threaded rod; 281, sealing head; 290, locking hole. Detailed Description of the Embodiments

[0022] To make the purpose, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with the specific embodiments and with reference to the accompanying drawings. It should be noted that, without conflict, the embodiments of the present utility model and the features in the embodiments can be combined with each other.

[0023] The following describes a kind of autoclave tooth locking device provided by some embodiments of the present utility model in conjunction with the accompanying drawings. Embodiment

[0024] Combined with Figure 1-2 As shown, a kind of autoclave tooth locking device provided by the present utility model includes: an autoclave body assembly 100 and a locking assembly 200;

[0025] Among them, the autoclave body assembly 100 includes a housing 110, an autoclave cover 120 installed at the opening of the housing 110, and a slotted opening 130 opened at the bottom of the housing 110 for the autoclave cover 120 to engage. Through the setting of the slotted opening 130, the locking assembly 200 can be located at the junction of the autoclave body assembly 100 and the locking assembly 200, which is convenient for vertical locking.

[0026] Specifically, a sealing gasket 111 is provided between the housing 110 and the autoclave cover 120, which can improve the sealing performance of the reaction kettle and make it safer.

[0027] Among them, the locking assembly 200 is arranged on the housing 110. The locking assembly 200 includes a steam inlet pipe 210 connected to the housing 110, a piston cylinder 220 connected to the bottom end of the steam inlet pipe 210 and located below the kettle lid 120, a drain valve 230 connected to the steam inlet pipe 210 and located at the bottom of the piston cylinder 220, a locking rod 240 arranged on the piston cylinder 220, a jack 250 opened at the bottom of the housing 110 for the locking rod 240 to pass through, a positioning hole 260 opened at the bottom of the kettle lid 120 for the locking rod 240 to be inserted and fixed, an exhaust hole 270 opened on the kettle lid 120 and penetrating through the positioning hole 260, a threaded rod 280 threadedly connected in the exhaust hole 270, and a locking hole 290 opened on the locking rod 240 for the threaded rod 280 to pass through.

[0028] Specifically, through the locking assembly 200, the internal pressure of the housing 110 is communicated with the pressure of the piston cylinder 220 by using the steam inlet pipe 210. When the pressure inside the housing 110 rises, it will drive the locking rod 240 on the piston cylinder 220 to protrude. Then, the locking rod 240 is inserted into the topmost part of the positioning hole 260, and then the threaded rod 280 is inserted to lock the locking rod 240 and block the exhaust hole 270. The kettle lid 120 can be automatically locked according to the internal pressure of the housing 110 and disengaged after exhausting without monitoring, which is safer and more stable. When the pressure inside the housing 110 drops and the door needs to be opened, first unscrew the threaded rod 280. The internal pressure of the housing 110 enters the positioning hole 260 through the exhaust hole 270 and slowly discharges from the slot 130. At the same time, the locking rod 240 retracts. At this time, under the action of the inclined surface of the positioning hole 260, the kettle lid 120 is pressed and inclined, and the gap between the kettle lid 120 and the housing 110 will gradually increase, accelerating the pressure discharge. In this way, until the locking rod 240 disengages from the kettle lid 120, the pressure discharge inside the housing 110 is effectively accelerated, the door can be opened quickly, and the safety is ensured at the same time.

[0029] Furthermore, a pressure gauge 211 is also provided on the steam inlet pipe 210. Through the pressure gauge 211, the pressure inside the steam inlet pipe 210 can be detected to observe whether it is the same as the internal pressure of the housing 110, playing an auxiliary monitoring role.

[0030] Importantly, the positioning hole 260 is a tower-shaped inclined stepped hole, and the top of the positioning hole 260 is adapted to the top end of the locking rod 240. When the locking rod 240 descends and retracts, it will contact the middle-stage step of the positioning hole 260. At this time, the kettle lid 120 can move and be pushed outwards under the action of the internal pressure of the housing 110, thereby increasing the gap at the sealing gasket 111. Then, the locking rod 240 continues to descend, gradually expanding the gap, and gradually discharging the internal pressure of the housing 110.

[0031] On the other hand, a sealing head 281 is fixed to the inner end of the threaded rod 280, which can improve the sealing performance in the exhaust hole 270 and prevent pressure relief.

[0032] Furthermore, the exhaust hole 270 and the locking hole 290 are located at the same horizontal position, which enables the threaded rod 280 to pass through the locking hole 290 and the exhaust hole 270 synchronously, that is, the locking rod 240 can be locked and the exhaust hole 270 can be blocked.

[0033] The working principle and usage process of the present utility model are as follows: First, close the kettle lid 120 so that the bottom of the kettle lid 120 is located in the slot 130, and then pressurize the housing 110. When the pressure in the housing 110 rises, it will drive the locking rod 240 on the piston cylinder 220 to protrude, and then the locking rod 240 is inserted into the topmost position of the positioning hole 260 to complete self-locking. Then, insert the threaded rod 280 to lock the locking rod 240 and block the exhaust hole 270, and continue to pressurize to the required standard. When the pressure in the housing 110 drops and the door needs to be opened, first unscrew the threaded rod 280. The internal pressure of the housing 110 enters the positioning hole 260 through the exhaust hole 270 and slowly discharges from the slot 130. At the same time, the locking rod 240 retracts. At this time, under the action of the inclined surface of the positioning hole 260, the kettle lid 120 is pressed and inclined, and the gap between the kettle lid 120 and the housing 110 will gradually increase, accelerating the pressure discharge. In this way, until the locking rod 240 disengages from the kettle lid 120, the accelerated pressure relief can be achieved.

[0034] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. An autoclave gear locking device, characterized in that: include: A kettle assembly (100) comprises a shell (110), a kettle cover (120) mounted on an opening of the shell (110), and a slot (130) formed at the bottom of the shell (110) for engaging the kettle cover (120); The locking assembly (200) is arranged on the shell (110), and the kettle body assembly (100) comprises a steam inlet pipe (210) connected to the shell (110), a piston cylinder (220) connected to the bottom end of the steam inlet pipe (210) and located below the kettle cover (120), a drain valve (230) connected to the steam inlet pipe (210) and located at the bottom of the piston cylinder (220), a locking rod (240) arranged on the piston cylinder (220), and a valve for releasing the steam from the piston cylinder (220). A plug hole (250) is provided at the bottom of the shell (110) for the locking rod (240) to pass through, a positioning hole (260) is provided at the bottom of the kettle cover (120) for the locking rod (240) to be inserted and fixed, an exhaust hole (270) is provided in the kettle cover (120) and passes through the positioning hole (260), a threaded rod (280) is threadedly connected to the exhaust hole (270), and a locking hole (290) is provided in the locking rod (240) for the threaded rod (280) to pass through.

2. The autoclave gear locking device according to claim 1, characterized in that: The steam inlet pipeline (210) is also provided with a pressure gauge (211).

3. The autoclave gear locking device according to claim 1, characterized in that: The positioning hole (260) is a tower-shaped inclined stepped hole, and the top of the positioning hole (260) is adapted to the top of the locking rod (240).

4. The autoclave gear locking device according to claim 1, characterized in that: A sealing gasket (111) is provided between the shell (110) and the kettle cover (120).

5. The autoclave gear locking device according to claim 1, characterized in that: A sealing head (281) is fixed to the inner end of the threaded rod (280).

6. The autoclave gear locking device according to claim 1, characterized in that: The exhaust hole (270) and the locking hole (290) are located at the same horizontal position.

Images