CN2580243Y - Water hammer arresting check valve - Google Patents

Abstract

The utility model relates to a check valve eliminating water hammers, which is composed of a base ring, an elevating valve flap, a copper sleeve, a core body, an outer shell, a resistance nozzle and a rubber pad, wherein the outer shell is made of rust preventing cast iron materials, the central position of the outer shell is provided with the core body which is in an extended water drop shape, and a tip head points to a water outlet. The tip head position pointing to the water outlet is provided with the resistance nozzle which is provided with a through hole directly communicated with a post plug of the valve flap. Different resistance values can be obtained by changing the diameter of the post plug of the elevating valve flap and the hole diameter of the through hole of the resistance nozzle. The impact of a water pump and the resistance of the through hole of the resistance nozzle can be always kept in a critical equilibrium state. The copper sleeve matched with the post plug of the back surface of the elevating valve flap is arranged in a post plug chamber in the core body. The round base ring is arranged on the water inlet position of the check valve eliminating water hammers. The utility model can be used for eliminating or basically eliminating the water hammers in a pipeline when the water pump is turned on and turned off to effectively protect the pipeline and the water pump.

Description

Eliminate the water hammer safety check

Technical field: the utility model relates to the water check valve that prevents water body backflow usefulness in water pump and the pipeline, relates in particular to and the matching used elimination water hammer of water pump safety check.

Background technique: present commercially available safety check, its valve are opened or are closed with water body is mobile in certain angle or space range, are in passivity fully, not control and regulating power.Therefore, when water pump starts suddenly and stops, all producing the very high water hammer of peak value, have certain collapsing force, can cause in various degree loss to pipeline.Therefore; special water hammer cancellation element need be installed on pipeline; reduced the water hammer peak value to a certain extent; but can not eliminate the harm of water hammer fully; therefore and the device of existing elimination water hammer and safety check be two kinds of equipment independently separately fully, it can't be installed in the most direct as a rule and need most on the position of protection; eliminate the weak effect of water hammer, can not protect and cover water pump and whole pipelines.

Goal of the invention: the objective of the invention is to, overcome the deficiencies in the prior art part, a kind of elimination water hammer safety check is provided,, make it when non-return, do not produce or do not produce water hammer basically, eradicated the harm of water hammer from the source with novel check valve structure.

Summary of the invention: elimination water hammer safety check described in the utility model includes seat ring, lifting flap, copper sheathing, core body, shell, resistance mouth and rubber cushion and forms.Said shell is an elimination water hammer check valve body supporting element described in the utility model, adopts the rust stable cast iron materials to make.Water inlet position at shell is provided with seat ring.The position of corresponding seat ring is provided with the lifting flap in the enclosure.The central position of shell is provided with core body, and core body is the water droplet shape of elongation, and the tip Parallel to the flow direction points to the water outlet of eliminating the water hammer safety check.Tip position at core body is provided with the resistance mouth, and said resistance mouth is provided with the through hole of a straight-through flap upper plug.Make the lifting flap in the process that moves up and down of opening and closing, water body in the plunger is extruded or sucked from the through hole of resistance mouth, produce very big resistance simultaneously, also this resistance just, absorb the impact force of water pump in the opening and closing process, made whole opening and closing process become evenly mild.If change the diameter of lifting flap plunger and the aperture of resistance mouth through hole, can obtain the Resistance Value of different sizes, to adapt to the different impact forces of different pressures and flow water pump, make the impact force of water pump and the resistance of resistance mouth through hole, all the time be in critical equilibrium state, to obtain the best elimination water hammer and the effect of non-return.In order to reduce the resistance in the valve as much as possible, core body also is set to the streamlined structure of low water drag.In the plunger cavity in core body, be provided with copper sheathing, match, formed the system of eliminating water hammer and resistance with the plunger at the lifting flap back side.Eliminating water hammer safety check water inlet position, be provided with seat ring, seat ring matches with the lifting flap, plays the effect of absorbing and non-return.Said seat ring is circular, makes of elastic material, and the outer surface of internal surface and lifting flap coincide, and the better seal sealing performance is arranged.Two ends of valve body is form of flanges, and the outside of each end can be provided with plurality of strengthening ribs according to the size of stress, is provided with a hole and unthreaded hole in the position of corresponding stiffening rib, is used for being connected with piping flange.

Elimination water hammer safety check described in the utility model can directly be installed on the water outlet place of water pump, and the initial end of pipeline just also needs most the position of protection here just.Based on eliminating the special structure of water hammer safety check self; as long as plunger diameter and resistance mouth aperture tie in; when just being in critical equilibrium value, elimination water hammer safety check described in the utility model is not produced or not producing water hammer substantially, pipeline and water pump are effectively protected.Need vertical the installation when elimination water hammer safety check described in the utility model uses, but the effect of still not losing its good elimination water hammer under the situation at inclination angle is arranged slightly.If mounted angle is excessive or when must level installing, then need install a secondary spring additional in flap post chamber,, can normally use to overcome the frictional force of flap plunger.Elimination water hammer safety check described in the utility model is applicable in the Plain, low-pressure pipe irrigation and pumping station, mountain area, for the rolling country, rationally also can adapt to if install.Suction valve and near-end water outlet are provided with improperly but the utility model does not fit into, and cause repeatedly concussion repeatedly to impact the light grade pipeline of water hammer.

Description of drawings: accompanying drawing is the structural representation of elimination water hammer safety check described in the utility model.1-seat ring, 2-lifting flap, 3-copper sheathing, 4-core body, 5-shell, 6-resistance mouth, 7-rubber cushion

Embodiment: referring now to accompanying drawing, be described as follows in conjunction with the embodiments: elimination water hammer safety check described in the utility model includes seat ring 1, lifting flap 2, copper sheathing 3, core body 4, shell 5, resistance mouth 6 and rubber cushion 7 and forms.Said shell 5 is elimination water hammer check valve body supporting elements described in the utility model, adopts the rust stable cast iron materials to make.In the water inlet position of shell 5, be provided with seat ring 1.The position of corresponding seat ring 1 in shell 5 is provided with lifting flap 2.The central position of shell 5 is provided with core body 4, and core body 4 is the water droplet shape of elongation, and the tip Parallel to the flow direction points to the water outlet of eliminating the water hammer safety check.Tip position at core body 4 is provided with resistance mouth 6, and said resistance mouth 6 is provided with the through hole of a straight-through flap upper plug.The end of stream against the current at core body 4 is provided with the copper sheathing 3 that cooperates with lifting flap 2.Here said copper sheathing 3 adopts brass material to make, but should be noted that, here said copper sheathing 3, also be not to do such restriction, it also is feasible adopting such as ABS plastic or other abrasion-proof corrosion-proof corrosion material, and just the relative hardness of comparing with cast iron materials will hang down.Said besides copper sheathing 3 the position is set, with respect to two movable parts and fixed, that is to say that also the purpose that copper sheathing 3 is set is the movable relatively of convenient two movable parts, also being arranged on the core body 4 on the lift valve lobe 2 so copper sheathing 3 is arranged on, all is feasible.The through hole that is provided with on the resistance mouth 6, make lifting flap 2 in the process that moves up and down of opening and closing, water body in the plunger is extruded or sucked from the through hole of resistance mouth 6, produce very big resistance simultaneously, also this resistance just, absorb the impact force of water pump in the opening and closing process, made whole opening and closing process become evenly mild.If change the diameter of lifting flap 2 plungers and the aperture of resistance mouth 6 through holes, can obtain the Resistance Value of different sizes, to adapt to the different impact forces of different pressures and flow water pump, make the impact force of water pump and the resistance of resistance mouth 6 through holes, all the time be in critical equilibrium state, to obtain the best elimination water hammer and the effect of non-return.In order to reduce the resistance in the valve as much as possible, core body 4 also is set to the streamlined structure of low water drag.In the plunger cavity in core body 4, be provided with copper sheathing 3, match, formed the system of eliminating water hammer and resistance with the plunger at lifting flap 2 back sides.Eliminating water hammer safety check water inlet position, be provided with seat ring 1, seat ring 1 matches with lifting flap 2, plays the effect of absorbing and non-return.Said seat ring 1 is circular, makes of elastic material, and the outer surface of internal surface and lifting flap 2 coincide, and the better seal sealing performance is arranged.Two ends of valve body is form of flanges, and the outside of each end can be provided with plurality of strengthening ribs according to the size of stress, is provided with a hole and unthreaded hole in the position of corresponding stiffening rib, is used for being connected with piping flange.Elimination water hammer safety check described in the utility model can directly be installed on the water outlet place of water pump, and the initial end of pipeline just also needs most the position of protection here just.Based on eliminating the special structure of water hammer safety check self; as long as the aperture of plunger diameter and resistance mouth 6 ties in; when just being in critical equilibrium value; elimination water hammer safety check described in the utility model is not produced or do not produce water hammer substantially, pipeline and water pump are effectively protected.Need vertical the installation when elimination water hammer safety check described in the utility model uses, but the effect of still not losing its good elimination water hammer under the situation at inclination angle is arranged slightly.If mounted angle is excessive or when must level installing, then need install a secondary spring additional in flap post chamber,, can normally use to overcome the frictional force of flap plunger.Elimination water hammer safety check described in the utility model is applicable in the Plain, low-pressure pipe irrigation and pumping station, mountain area, for the rolling country, rationally also can adapt to if install.Suction valve and near-end water outlet are provided with improperly but the utility model does not fit into, and cause repeatedly concussion repeatedly to impact the light grade pipeline of water hammer.

Claims (5)

1, eliminates the water hammer safety check, including seat ring (1), lifting flap (2), copper sheathing (3), core body (4), shell (5), resistance mouth (6) and rubber cushion (7) forms, the central position of shell (5) is provided with core body (4), core body is the water droplet shape of elongation, the tip Parallel to the flow direction of core body (4) is characterized in that the water inlet position in shell (5), is provided with seat ring (1), the position of corresponding seat ring (1) in shell (5) is provided with lifting flap (2).

2, elimination water hammer safety check according to claim 1 is characterized in that the tip position of core body (4) being provided with resistance mouth (6), and said resistance mouth (6) is provided with the through hole of a straight-through flap upper plug.

3, elimination water hammer safety check according to claim 1 is characterized in that being provided with copper sheathing (3) in the plunger cavity in the core body (4).

4, elimination water hammer safety check according to claim 1 is characterized in that being provided with seat ring (1) eliminating water hammer safety check water inlet position.

5, elimination water hammer safety check according to claim 1 is characterized in that the shape of core body (4) is set to the streamlined of low water drag.