CN201252049Y

CN201252049Y - Totally enclosed adjustable flow switch

Info

Publication number: CN201252049Y
Application number: CNU2008201645579U
Authority: CN
Inventors: 竺宏辉; 胡大舟
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-09-09
Filing date: 2008-09-09
Publication date: 2009-06-03
Anticipated expiration: 2018-09-09

Abstract

The utility model relates to a totally enclosed adjustable flow switch which has the design characteristics that a flow direction blade is fixed on a flow direction rod; both ends of a corrugated tube are respectively welded with the flow direction rod and a joint assembly; a screw is connected with the joint assembly and a switch bracket assembly of a bottom case; a sealing pad is additionally arranged between the bottom case and the joint assembly; a spring is connected with a main lever and a flow adjusting screw, wherein, the spring is fixed by a spring fixing seat, and is stretched by the flow adjusting screw for adjusting the elasticity; the flow adjusting screw is clamped on the switch bracket assembly by a flow adjusting screw clamp; the position of the main level and the position of a microswitch are fixed through the switch bracket assembly; the microswitch and the main lever is used for potency dimension adjustment through a microswitch adjusting screw; the sealing pad arranged on a top cover is fixed on the bottom case through the screw; and a waterproof coiling ring assembly is tightly screwed in the bottom case. The totally enclosed adjustable flow switch effectively prevents condensation in a wire connection position, has the advantages of simple structure, small repeat accuracy error, no seepage, no corrosion and explosion prevention, and is suitable for central air conditioners, fire fighting water supply equipment and air conditioning matching equipment.

Description

Totally-enclosed adjustable flow switch

Technical field

The utility model relates to a kind of totally-enclosed adjustable flow switch that is used in the industries such as residential central air conditioning, fire-fighting watering equipment, air conditioning, belongs to the flow switch technical field.

Background technology

At present, both at home and abroad the flow switch of producing is divided into two kinds of mechanical type and electromagnetic types substantially, and refrigerating industry selects for use mechanical type comparatively general, and the mechanical flow switch generally adopts the metal drain pan, easily corrosion leakage; And the space is bigger, is easy to dewfall, this with the pipeline of operational environment in temperature low relevant, this phenomenon then easily causes short circuit phenomenon if result from wiring place; Perhaps use external connection then setter to be had and do requirement, often be easy to generate the potential safety hazard that wiring place comes off.

Summary of the invention

For overcoming above-mentioned deficiency, the purpose of this utility model is to make it can solve the technical problem of anti-condensation in relatively poor operating mode, built-in wiring safety.And possess volume moderate, two actions, totally-enclosed adjustable flow switch that the repeatable accuracy error is little can be provided simultaneously, be applied to industries such as residential central air conditioning, fire-fighting watering equipment, air conditioning widely.The purpose of this utility model is to adopt following technical scheme to realize.

A kind of totally-enclosed adjustable flow switch, this switch by flow to bar, bellows, drain pan, switch bracket assembly, sensitive switch, waterproof inlet wire coil assembly, earthing screw, loam cake, go up sealing gasket, flow adjustment screw clip, flow adjustment screw, spring fixed seat, spring, sensitive switch adjustment screw, main lever, lower seal pad, adapter assembly, flow direction plate form.Its key points in design is that flow direction plate is fixed on and flows on the bar, the two ends of bellows respectively with flow to bar and be connected with adapter assembly.Adapter assembly is connected by screw with drain pan, and this group screw is the floatless switch bracket component simultaneously, and adds the lower seal pad between drain pan and adapter assembly.Spring connects main lever and flow adjustment screw, and its medi-spring is fixed by spring fixed seat and stretched by flow adjustment screw and adjusts elastic force, flow adjustment screw by the flow adjustment screw clip on the switch bracket assembly.Main lever and sensitive switch are by switch bracket assembly fixed position, and the adjusting of driving dynamics is done in the switch motion of sensitive switch by sensitive switch adjustment screw and main lever.On cover sealing gasket and fixedly connected by screw with drain pan, waterproof inlet wire coil assembly is connected in drain pan.

The utility model has the advantages that:

(1), modern design, wiring is built-in, and is inner hermetically sealed, waterproof inlet wire circle will be adjusted and adapt to the inlet wire thickness, prevent the condensation generation;

(2), the metal appliance switch is that whole, its single-pole double throw microswitch contact (SPDT) can make a loop conducting, and cuts off the another one loop simultaneously, promptly reports to the police to cut off and carries out simultaneously, and the ground connection screw is arranged, and improves fail safe;

(3), shell is that the ABS plastic cost is low, metal material consumption is few, does not non-leakagely corrode, and keeps in repair easy.

(4), work maximum pressure 16bar, the scope of application is big.

Description of drawings

Fig. 1 is a structure chart of the present utility model.

Fig. 2 is an outline drawing of the present utility model.

Embodiment

As shown in Figure 1, totally-enclosed adjustable flow switch by flow to bar 1, bellows 2, drain pan 3, switch bracket assembly 4, sensitive switch 5, waterproof inlet wire coil assembly 6, earthing screw 7, loam cake 8, go up sealing gasket 9, flow adjustment screw clip 10, flow adjustment screw 11, spring fixed seat 12, spring 13, sensitive switch adjustment screw 14, main lever 15, lower seal pad 16, adapter assembly 17, flow direction plate 18 form.Flow direction plate is fixed on and flows on the bar, the two ends of bellows respectively with flow to bar and adapter assembly is welded to connect, be welded to connect the operating pressure that to bear 16bar, adapter assembly is connected with screw with drain pan, this group screw is the floatless switch bracket component simultaneously, and between drain pan and adapter assembly, add the lower seal pad and prevent that steam from circulating from following pore, spring connects main lever and its medi-spring of flow adjustment screw is fixed by spring fixed seat and adjust elastic force by the flow adjustment screw stretching, flow adjustment screw prevents that by the flow adjustment screw clip screw loosening is difficult for skidding off on the switch bracket assembly, main lever and sensitive switch are by switch bracket assembly fixed position, and sensitive switch is done the adjusting of driving dynamics by sensitive switch adjustment screw and main lever.Wherein fine motion adjustment screw adopts the tip design, reduce friction with lever, improve repeatable accuracy, on cover sealing gasket and drain pan is fixed with screw, loam cake and drain pan Position Design have limit for height groove control sealing gasket compression degree to improve sealing effectiveness, waterproof inlet wire coil assembly is connected in drain pan, and rotatable control entrance hole size makes sealing ring wherein be close to the effect that electric wire plays sealing.

The loam cake drain pan of totally-enclosed adjustable flow switch adopts ABS plastic to have good comprehensive performances, both high impact toughness and favorable mechanical performance, and good heat-resisting, oil resistance and chemical stability, dimensionally stable, electrical property are good.Other parts are metallic article, can arrange in pairs or groups with different metal according to the different mining of medium, guarantee that totally-enclosed adjustable flow switch normally uses under more environment.

Before totally-enclosed adjustable flow switch is installed, can mix up the normal flow point earlier before dispatching from the factory, can change or cut the flow direction plate of different size according to specification if any special requirement.Flow direction plate is impacted by media fluid when flow increases, drive flows to the bar motion, drive the main lever motion according to lever principle, the pulling spring, and push up the fine motion adjustment screw and touch the sensitive switch action, make its loop conducting in single-pole double throw microswitch contact (SPDT), and cut off the another one loop simultaneously, the action of control motor reaches the effect of controlling flow.

Claims

1, a kind of totally-enclosed adjustable flow switch, this switch by flow to bar (1), bellows (2), drain pan (3), switch bracket assembly (4), sensitive switch (5), waterproof inlet wire coil assembly (6), earthing screw (7), loam cake (8), go up sealing gasket (9), flow adjustment screw clip (10), flow adjustment screw (11), spring fixed seat (12), spring (13), sensitive switch adjustment screw (14), main lever (15), lower seal pad (16), adapter assembly (17), flow direction plate (18) form, it is characterized in that:

Flow direction plate (18) is fixed on and flows on the bar (1), the two ends of bellows (2) respectively with flow to bar (1) and be connected with adapter assembly (17);

Adapter assembly (17) is connected by screw with drain pan (3), and this group screw is floatless switch bracket component (4) simultaneously, and adds lower seal pad (16) between drain pan (3) and adapter assembly (17);

Spring (13) connects main lever (15) and flow adjustment screw (11), its medi-spring is fixed by spring fixed seat (12) and is adjusted elastic force by flow adjustment screw (11) stretching, and flow adjustment screw (11) is clipped on the switch bracket assembly (4) by flow adjustment screw clip (10);

Main lever (15) and sensitive switch (5) are by switch bracket assembly (4) fixed position, and the adjusting of driving dynamics is done in the switch motion of sensitive switch (5) by sensitive switch adjustment screw (14) and main lever (15);

Loam cake (8) upward sealing gasket (9) is fixedlyed connected by screw with drain pan (3), and waterproof inlet wire coil assembly (6) is connected in drain pan (3).