CN219832493U

CN219832493U - Novel explosion-proof safety switch

Info

Publication number: CN219832493U
Application number: CN202320165778.2U
Authority: CN
Inventors: 郭蒙恩; 郭恩会; 李铨明
Original assignee: Zhongshan Severman Electronic Technology Co ltd
Current assignee: Zhongshan Severman Electronic Technology Co ltd
Priority date: 2023-01-20
Filing date: 2023-01-20
Publication date: 2023-10-13
Anticipated expiration: 2033-01-20

Abstract

The utility model discloses a novel explosion-proof safety switch, which comprises a shell, wherein a key assembly, an electromagnetic valve assembly and a machine core are sequentially arranged in the shell from front to back, the key assembly comprises a rotating shaft pressing rod which moves forwards and backwards, a copper sleeve sleeved on the rotating shaft pressing rod and a key which is perpendicular to the moving direction of the rotating shaft pressing rod, the electromagnetic valve assembly comprises an electromagnet, a movable iron core and a push-pull rod fixedly connected with the movable iron core, the machine core comprises a machine core pushing rod which can move forwards and backwards, and a rotary button is further arranged on the shell; the rear end of the push-pull rod is connected with the front end of the core push rod through a plastic connecting sleeve, the rear end of the rotating shaft compression rod is also sleeved with a sealing sleeve for sealing the outer side wall of the rear end of the copper sleeve, and the rear end of the sealing sleeve is in sealing connection with the front end of the plastic connecting sleeve; the middle part of rotary button has still cup jointed the sealing washer, and the gap between rotary button and the shell is sealed to the sealing washer, and seal cover and rotary button play better sealed effect, prevent the entering of outside dust, avoid inside electric current spark to detonate.

Description

Novel explosion-proof safety switch

Technical Field

The utility model relates to the technical field of safety switches, in particular to a novel explosion-proof safety switch with good sealing effect.

Background

The electromagnetic safety switch is basically a control device for a device that always operates below a rated value (or equal to the rated value) or within a safe operating range thereof. The electromagnetic safety switch consists of two linked parts: the switch body is generally an electromagnetic valve which is additionally connected with a power supply and a key assembly for controlling the electromagnetic valve to mechanically act, namely a machine core, the switch operation member is a component for directly controlling whether a load is electrified or not, a movable contact and two stationary contacts are arranged in the switch operation member, the two stationary contacts are respectively connected with the load, the movable contact is linked with the mechanical part of the machine core, a movable iron core of the electromagnetic valve is linked with the mechanical part of the machine core, so that whether the machine core is electrified or not is controlled, and after the movable contact is overlapped with the two stationary contacts, the load is electrified, so that the switch is simple in structure and wide in application range.

The existing electromagnetic safety switch is a movement and an electromagnetic installation switch for controlling a multi-path circuit to be simultaneously turned on or turned off, which are disclosed in China patent publication No. CN115116796A, and comprises all structural elements of the existing common electromagnetic safety switch, and is mainly designed and manufactured according to the requirements of the multi-path circuit, the structure is simple, the functions are various, but the electromagnetic safety switch of the type has no special sealing structure, so that the electromagnetic safety switch is only suitable for the common environment with less dust, and when the electromagnetic safety switch is applied to the special environment with more dust, the electromagnetic safety switch can cause dust to enter the interior from a gap of the electromagnetic safety switch due to poor sealing, thereby causing the internal current spark to be detonated; in addition, the safety switch is tightly attached to the shell, so that the shell heats up due to the heating of the electromagnetic valve after long-time use.

Therefore, the person skilled in the art is striving to develop a novel explosion-proof safety switch with good sealing effect and high safety.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, the present utility model aims to provide a novel anti-explosion safety switch with good sealing effect and high safety.

In order to achieve the above purpose, the utility model provides a novel explosion-proof safety switch, which comprises a shell, wherein a key assembly, an electromagnetic valve assembly and a core are sequentially arranged in the shell from front to back, the key assembly comprises a rotating shaft pressing rod which moves forwards and backwards, a copper sleeve sleeved on the rotating shaft pressing rod and a key which is perpendicular to the moving direction of the rotating shaft pressing rod, the electromagnetic valve assembly comprises an electromagnet, a movable iron core positioned at the axis of the electromagnet and a push-pull rod fixedly connected with the movable iron core, the core comprises a core pushing rod which can move forwards and backwards, the rear end of the rotating shaft pressing rod is connected with the front end of the core pushing rod, and a rotary button inserted on the moving route of the core pushing rod is also arranged on the shell; the rear end of the push-pull rod is connected with the front end of the movement push rod through a plastic connecting sleeve, a sealing sleeve for sealing the outer side wall of the rear end of the copper sleeve is sleeved on the rear end of the rotating shaft pressure rod, and the rear end of the sealing sleeve is in sealing connection with the front end of the plastic connecting sleeve; the middle part of the rotary button is also sleeved with a sealing ring, and the sealing ring seals a gap between the rotary button and the shell.

The middle part of the rotary button is also provided with a sealing ring accommodating groove for accommodating the sealing ring.

The shell comprises a bottom plate and an upper cover covered on the bottom plate, the bottom plate is provided with a positioning groove, the positioning groove is provided with a plurality of upward protruding jacking blocks, and the electromagnetic valve assembly and the machine core can be respectively placed on the corresponding jacking blocks.

The electromagnetic valve is characterized in that a partition plate is further accommodated in the positioning groove, an insulating protrusion which covers the top block and protrudes upwards is arranged below the movement on the partition plate, and an opening for the top block to pass through is arranged below the electromagnetic valve assembly on the partition plate.

The edge of the partition plate is also provided with a continuous limiting fence which protrudes upwards, and the limiting fence clamps the two sides of the movement.

The top of the shell is provided with a grounding threaded hole.

The rear end of the push-pull rod is provided with a connecting clamping groove, and the plastic connecting sleeve is provided with a U-shaped groove for clamping the connecting clamping groove; the rear end part of the sealing sleeve is provided with a containing groove which is recessed forwards, and the front end of the plastic connecting sleeve is provided with a sealing table which is embedded into the containing groove; the front end part of the sealing sleeve is also provided with an outward expansion sealing ring which extends outwards in the radial direction.

The electromagnetic valve assembly is arranged on a heat insulation fixing frame in a shape like a Chinese character 'yi', the front end and the rear end of the bottom of the heat insulation fixing frame are respectively provided with a first buckling strip extending inwards, and the two sides of the top of the heat insulation fixing frame are respectively provided with a second buckling strip extending downwards; the heat insulation fixing frame is characterized in that connecting lugs extending outwards are further arranged at the front end and the rear end of the bottom of the heat insulation fixing frame respectively, and connecting through holes extending vertically are formed in the connecting lugs.

Limiting columns are arranged at the front end and the rear end of the heat insulation fixing frame and located at the two sides of the push-pull rod respectively.

The beneficial effects of the utility model are as follows: the novel explosion-proof safety switch comprises a shell, wherein a key assembly, an electromagnetic valve assembly and a machine core are sequentially arranged in the shell from front to back, the key assembly comprises a rotating shaft pressing rod which moves back and forth, a copper sleeve sleeved on the rotating shaft pressing rod and a key which is perpendicular to the moving direction of the rotating shaft pressing rod, the electromagnetic valve assembly comprises an electromagnet, a movable iron core and a push-pull rod fixedly connected with the movable iron core, the machine core comprises a machine core pushing rod which can move back and forth, and a rotary button is further arranged on the shell; the rear end of the push-pull rod is connected with the front end of the core push rod through a plastic connecting sleeve, the rear end of the rotating shaft compression rod is also sleeved with a sealing sleeve for sealing the outer side wall of the rear end of the copper sleeve, and the rear end of the sealing sleeve is in sealing connection with the front end of the plastic connecting sleeve; the middle part of rotary button has still cup jointed the sealing washer, and the gap between rotary button and the shell is sealed to the sealing washer, and seal cover and rotary button play better sealed effect, prevent the entering of outside dust, avoid inside electric current spark to detonate.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a side view of the present utility model;

FIG. 3 is a cross-sectional view taken at A-A of FIG. 2;

FIG. 4 is a schematic view of a portion of the structure of the present utility model;

fig. 5 is an exploded view of the present utility model.

Description of the embodiments

The present utility model will be further described with reference to the accompanying drawings and examples, and it should be noted that, in the description of the present utility model, the terms "upper", "lower", "left", "right", "inner", "outer", and the like are used for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the movement or element to be referred to must have a specific orientation, be constructed and operated in a specific manner, and thus should not be construed as limiting the present utility model. The terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 1 to 5, a novel explosion-proof safety switch comprises a shell 1, wherein a key assembly 2, an electromagnetic valve assembly 3 and a core 4 are sequentially installed in the shell 1 from front to back, the key assembly 2 comprises a rotating shaft pressing rod 21 which moves forwards and backwards, a copper sleeve 22 sleeved on the rotating shaft pressing rod 21 and a key 23 which is perpendicular to the moving direction of the rotating shaft pressing rod 21, the electromagnetic valve assembly 3 comprises an electromagnet 31, a movable iron core 32 positioned at the axis of the electromagnet 31 and a push-pull rod 33 fixedly connected with the movable iron core 32, the core 4 comprises a core pushing rod 41 which can move forwards and backwards, the rear end of the rotating shaft pressing rod 21 is connected with the front end of the push-pull rod 33, and a rotary button 11 inserted on the moving route of the core pushing rod 41 is also installed on the shell 1; the rear end of the push-pull rod 33 is connected with the front end of the movement push rod 41 through a plastic connecting sleeve 34, a sealing sleeve 35 for sealing the outer side wall of the rear end of the copper sleeve 22 is sleeved on the rear end of the rotating shaft pressing rod 21, and the rear end of the sealing sleeve 35 is in sealing connection with the front end of the plastic connecting sleeve 34; the middle part of rotary button 11 has still cup jointed sealing washer 12, sealing washer 12 sealed rotary button 11 with the gap between the shell 1 prevents the dust to get into solenoid valve subassembly 3 through the gap between pivot depression bar 21 and the key subassembly 2 under the sealed effect of plastics adapter sleeve 34 and seal cover 35, prevents the dust to get into in the shell 1 through the gap between rotary button 11 and the shell 1 under the sealed effect of sealing washer 12, just so ensures the entering of isolated gas and dust, prevents inside electric current spark and detonates.

In addition, the electromagnetic valve assembly 3 is installed on a heat insulation fixing frame 5 in a shape of a Chinese character 'yi', the front and rear ends of the bottom of the heat insulation fixing frame 5 are respectively provided with a first buckling strip 51 extending inwards, and the two sides of the top of the heat insulation fixing frame 5 are respectively provided with a second buckling strip 52 extending downwards; the bottom front and back both ends of the fixed frame 5 of thermal-insulated still are provided with the engaging lug 53 of outside extension respectively, be provided with the connecting hole 54 of vertical trend on the engaging lug 53, connecting hole 54 is provided with the bolt assembly and is connected with the shell, and the fixed frame 5 of thermal-insulated is fixed whole solenoid valve subassembly 3 and is kept apart with the shell, can not lead to the shell to send out to scald in the course of working, avoids the danger of generating heat.

Limiting columns 55 are further arranged at the front end and the rear end of the heat insulation fixing frame 5 and located at the two sides of the push-pull rod 33 respectively, so that the range of the limiting columns 55 is not exceeded when the push-pull rod 33 moves forwards and backwards.

The middle part of rotary button 11 still is provided with the holding sealing washer holding groove 13 of holding sealing washer 12, and sealing washer 12 card is in sealing washer holding groove 13 and with the inside wall sealing connection of shell, prevents that the dust from getting into through the gap between sealing washer 12 and the shell 1.

Further, the casing 1 is composed of a bottom plate 15 and an upper cover 16 covering the bottom plate 15, the bottom plate 15 is provided with a positioning groove 17, the positioning groove 17 is provided with a plurality of upward protruding top blocks 18, and the electromagnetic valve assembly 3 and the movement 4 can be respectively placed on the corresponding top blocks 18; a partition plate 19 is also accommodated in the positioning groove 17, an insulation protrusion 191 which covers the top block 18 and protrudes upwards is arranged on the partition plate 19 below the movement 4, and an opening 192 for the top block 18 to pass through is arranged on the partition plate 19 below the electromagnetic valve assembly 3; the edge of the partition plate 19 is also provided with a continuous limiting fence 193 which protrudes upwards, the limiting fences 193 clamp the two sides of the movement 4, and certain safety gaps are reserved between the electromagnetic valve assembly 3, the movement 4 and the bottom plate 11 respectively under the combined action of the partition plate 19, the top block 18 and the insulating protrusion 191, so that the shell cannot be scalded and leaked.

The top of shell 1 is provided with a ground connection screw hole 14, ground connection screw hole 14 is used for threaded connection ground connection bolt and wire, and the convenience is with this novel explosion-proof safety switch ground connection, safer like this.

The rear end of the push-pull rod 33 is provided with a connecting clamping groove, and the plastic connecting sleeve 34 is provided with a U-shaped groove 341 for clamping the connecting clamping groove; the rear end part of the sealing sleeve 35 is provided with a containing groove 351 which is recessed forwards, and the front end of the plastic connecting sleeve 34 is provided with a sealing table 342 which is embedded into the containing groove 351; the front end part of the sealing sleeve 35 is also provided with an outward expansion sealing ring 352 extending radially outwards, and the plastic connecting sleeve 34 box and the sealing sleeve 35 have certain elastic allowance, good sealing effect and long service life.

The foregoing describes in detail preferred embodiments of the present utility model. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the utility model by one of ordinary skill in the art without undue burden. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.

Claims

1. The utility model provides a novel explosion-proof safety switch, includes shell (1), key assembly (2), solenoid valve subassembly (3) and core (4) are installed in proper order from front to back in shell (1), key assembly (2) are including pivot depression bar (21) that back-and-forth movement, cup joint copper sheathing (22) on pivot depression bar (21) and perpendicular to pivot depression bar (21) direction of movement's key (23), solenoid valve subassembly (3) include electro-magnet (31), be located moving core (32) of electro-magnet (31) axle center and with push-and-pull rod (33) of moving core (32) fixed connection, core (4) are including core push rod (41) that can reciprocate, the rear end of pivot depression bar (21) with the front end of push-and-pull rod (33) is connected, the rear end of push-and-pull rod (33) with the front end of core push rod (41) is connected, still install on shell (1) insert rotating button (11) on core (41) movement route.

The method is characterized in that: the rear end of the push-pull rod (33) is connected with the front end of the movement push rod (41) through a plastic connecting sleeve (34), a sealing sleeve (35) for sealing the outer side wall of the rear end of the copper sleeve (22) is sleeved on the rear end of the rotating shaft pressing rod (21), and the rear end of the sealing sleeve (35) is connected with the front end of the plastic connecting sleeve (34) in a sealing way; the middle part of the rotary button (11) is also sleeved with a sealing ring (12), and the sealing ring (12) seals a gap between the rotary button (11) and the shell (1).

2. The novel explosion-proof safety switch as set forth in claim 1, wherein: the middle part of the rotary button (11) is also provided with a sealing ring accommodating groove (13) for accommodating the sealing ring (12).

3. The novel explosion-proof safety switch as set forth in claim 1, wherein: the shell (1) is composed of a bottom plate (15) and an upper cover (16) covered on the bottom plate (15), the bottom plate (15) is provided with a positioning groove (17), the positioning groove (17) is provided with a plurality of upward protruding jacking blocks (18), and the electromagnetic valve assembly (3) and the movement (4) can be respectively placed on the corresponding jacking blocks (18).

4. A novel explosion-proof safety switch as set forth in claim 3, wherein: the electromagnetic valve is characterized in that a partition plate (19) is further accommodated in the positioning groove (17), an insulating protrusion (191) which covers the top block (18) and protrudes upwards is arranged below the movement (4) on the partition plate (19), and an opening (192) for the top block (18) to pass through is arranged below the electromagnetic valve assembly (3) on the partition plate (19).

5. The novel explosion-proof safety switch as set forth in claim 4, wherein: the edge of the partition plate (19) is also provided with a continuous limiting fence (193) protruding upwards, and the limiting fence (193) clamps the two sides of the movement (4).

6. The novel explosion-proof safety switch as set forth in claim 1, wherein: the top of the shell (1) is provided with a grounding threaded hole (14).

7. The novel explosion-proof safety switch as set forth in claim 1, wherein: the rear end of the push-pull rod (33) is provided with a connecting clamping groove, and the plastic connecting sleeve (34) is provided with a U-shaped groove (341) for clamping the connecting clamping groove; the rear end part of the sealing sleeve (35) is provided with a containing groove (351) which is recessed forwards, and the front end of the plastic connecting sleeve (34) is provided with a sealing table (342) embedded into the containing groove (351); the front end of the sealing sleeve (35) is also provided with an outward expansion sealing ring (352) extending outwards in a radial direction.

8. The novel explosion-proof safety switch as set forth in claim 1, wherein: the electromagnetic valve assembly (3) is arranged on a heat insulation fixing frame (5) in a shape like a Chinese character 'yi', the front end and the rear end of the bottom of the heat insulation fixing frame (5) are respectively provided with a first buckling strip (51) extending inwards, and the two sides of the top of the heat insulation fixing frame are respectively provided with a second buckling strip (52) extending downwards; the heat insulation fixing frame is characterized in that connecting lugs (53) extending outwards are further arranged at the front end and the rear end of the bottom of the heat insulation fixing frame (5) respectively, and connecting through holes (54) extending vertically are formed in the connecting lugs (53).

9. The novel explosion-proof safety switch as set forth in claim 8, wherein: limiting columns (55) are respectively arranged at the front end and the rear end of the heat insulation fixing frame (5) and positioned at the two sides of the push-pull rod (33).