CN201428639Y - Three-way check and hemispherical combination valve for centrifugal pump - Google Patents

Abstract

The utility model relates to a valve, in particular to a novel combination valve with two functions of a check valve and a spherical valve on a liquid medium delivery pipeline for a centrifugal pump.The utility model adopts the technical scheme as follows: the three-way check and hemispherical combination valve comprises a spherical valve device and a check valve device, wherein the spherical valve comprises a spherical valve body and a spherical valve core; the spherical valve core and a discharge hole on the spherical valve body are matched to open and close the spherical valve device; thecheck valve device comprises a check valve body and a spherical valve core; and the spherical valve core and a feeding hole on the check valve body are matched to open and close the check valve. By adopting the scheme, the utility model overcomes the shortcomings in the prior art, and provides the novel three-way check and hemispherical combination valve for a centrifugal pump, which has the advantages of reasonable structure and convenient use.

Description

Tee centrifugal pump non-return, half-ball combination valve

Technical field

The utility model relates to a kind of valve, relates to a kind of centrifugal pump specifically and is used to carry the novel combined valve with non-return, two kinds of functions of ball valve on the liquid medium pipeline.

Background technique

In the prior art, particularly at medicine, chemical industry, in the field of food, adopt centrifugal pump as the equipment of carrying liquid material mostly, its typical pipeline distributing chart, as shown in Figure 1, this piping method needs to install three ball valves in pipeline, cost height not only, during installation fee, effort, not only loaded down with trivial details but also be unfavorable for that the workman operates, and very easily damage centrifugal pump, the workload that increases service worker greatly particularly delays production, cause unnecessary loss, generally speaking disadvantage the more, its drawback concrete manifestation in the following areas: 1, when conveying material, need open valve 1,2, cycling start more also will be adjusted this two valves 1 repeatedly according to the requirement of following operation, 2, just can make the material that transfers out reach the optimised process requirement.In actual production, operator will start several pumps sometimes simultaneously, carry different materials.Will adjust more valve repeatedly, and so just be too busy to do it, and transfer this to forget that sometimes, spirit is not concentrated slightly, will cause damage to pump.Especially when carrying solvent, the adjustment of flow is even more important, because various solvents are conditional at ducted flow velocity, hypervelocity will produce static and serious security incident takes place.In addition,, pump is built the pressure, also cause the damage of centrifugal pump easily if operator do not open valve 1 or valve 2 with regard to cycling start.2, broken material after, in closing down the process of centrifugal pump, requiring in accordance with regulations is should first standard-sized sheet valve 2, makes its material infinite reflux, throttle down 1 again, last termination of pumping.Because complex operation, the often contrary rules of operator and row, this just causes ducted clout to be fed back into rapidly in the pump chamber, makes the impeller high speed reverse rotation, the impeller nut exoneration, impeller breaks away from pump shaft, and gently then impeller damages, pump chamber wearing and tearing, pump shaft bending deflection, heavy then damage mechanical seal and make it inefficacy.Every mechanical seal is worth all about 2-3 is thousand yuan, causes great waste, not only delays production, returns service worker and brings work heavy in a large number, that repeat.If 3 run into unexpected power failure, the damage of centrifugal pump also very easily takes place.

Summary of the invention

The purpose of this utility model is to overcome the prior art defective, provides a kind of rational in infrastructure, novel tee centrifugal pump non-return, half-ball combination valve easy to use.

Realize above-mentioned purpose, the utility model adopts following technological scheme: a kind of tee centrifugal pump non-return, half-ball combination valve, it is characterized in that: include semispherical valve device and check vavle device, described semispherical valve device includes hemisphere valve body and hemisphere spool, described hemisphere spool cooperates the conducting that realizes the semispherical valve device and closes with discharge port on the hemisphere valve body, described check vavle device includes check valve body and spheroid spool, described spheroid spool cooperates the conducting that realizes safety check with material feeding mouth on the check valve body and closes, described hemisphere valve body is fixedlyed connected with check valve body, described hemisphere valve body is provided with the passage that connects with its material feeding mouth, and the material feeding mouth on this passage and the check valve body connects.

By adopting such scheme, in use, then no matter flap is on any position, all need not first switch valve recurrence pump dnockout, and pump is had no infringement, and when needing to adjust flow, only need move a handle to adjust, just can reach desirable flow.When unexpected power failure or artificial violation operation start-stop centrifugal pump, material stock in the carrier pipe is stuck in the pipeline along with closing of lift check valve mouth, will not return at a high speed in the pump chamber, and cause the damage of centrifugal pump, a large amount of maintenance works has not only been saved in this design, has saved a large amount of centrifugal pump spare parts again.Prolonged the working life of pump.

Further setting of the present utility model is: described hemisphere valve body and check valve body joint are provided with the check valve seal circle, the circumferential perimeter of sealing circle is provided with chimb, this chimb is fastened in the holding tank of hemisphere valve body and check valve body joint, the spheroid spool by with the cooperating the conducting that realizes safety check and close of check valve seal circle, the discharge port of described hemisphere valve body is provided with the semispherical valve seal ring that cooperates with the hemisphere spool.

By adopting such scheme, make semispherical valve device and check vavle device sealing effect when closing better, particularly the check valve seal circle adopts such scheme, both can well be located, and can play the sealing between hemisphere valve body and the check valve body again.

Further setting of the present utility model is: be respectively arranged with supply pipe fitting seat and discharge nozzle fitting seat on the material feeding mouth of described hemisphere valve body and the discharge port; The cross section of described semispherical valve seal ring becomes " L " shape, on one side it is conflicted on the discharge port periphery of hemisphere valve body, another side is fastened in the draw-in groove that constitutes between discharge nozzle fitting seat and the hemisphere valve body.

By adopting technique scheme, the semispherical valve seal ring both can well be located, can play the sealing between hemisphere valve body and the discharge nozzle fitting seat again.

The utility model further is provided with: described semispherical valve device is the manually operated type control valve unit, described hemisphere spool is fixed by symmetrically arranged positioning shaft in two ends and valve rod, wherein the positioning shaft of an end is fixed on the hemisphere valve body by setting sleeve and positioning seat, the positioning shaft of the other end is fixed on the valve rod, this valve rod is fixed on the hemisphere valve body by stuffing box, realizes that by filler and Gland motive sealing cooperates between valve rod and the stuffing box.

By adopting technique scheme, make semispherical valve apparatus structure compact and reasonable, practical and convenient, the motive sealing fiting effect between valve rod and the hemisphere valve body is better.

The last setting of the utility model is: be set with check-valve lever on the described spheroid spool, on the baffle plate that is set in check valve body of this check-valve lever, described baffle plate is arranged on the axle central position of the discharge port of check valve body.

By adopting technique scheme, can guarantee the stability of check vavle device work.

Below in conjunction with accompanying drawing the utility model is described in further detail

Description of drawings

Fig. 1 is the practical state principle schematic of prior art;

Fig. 2 is the utility model example structure schematic representation 1;

Fig. 3 is the utility model example structure schematic representation 2.

Embodiment

As shown in Figures 2 and 3, a kind of tee centrifugal pump non-return, half-ball combination valve, include semispherical valve device 1 and check vavle device 2, described semispherical valve device 1 includes hemisphere valve body 11 and hemisphere spool 12, described hemisphere spool 12 cooperates the conducting that realizes semispherical valve device 1 and closes with discharge port 111 on the hemisphere valve body 11, described check vavle device 2 includes check valve body 21 and spheroid spool 22, described spheroid spool 22 cooperates the conducting that realizes safety check with material feeding mouth 211 on the check valve body 21 and closes, described hemisphere valve body 11 is fixedlyed connected with check valve body 21, described hemisphere valve body 11 is provided with the passage 113 that connects with its material feeding mouth 112, and the material feeding mouth 211 on this passage 113 and the check valve body 21 connects.The utility model embodiment adopts such scheme, and then in use, no matter spool is on any position, all need not be first switch valve recurrence pump dnockout, and pump is had no infringement, when needing to adjust flow, only need move a handle and adjust, just can reach desirable flow.When unexpected power failure or artificial violation operation start-stop centrifugal pump, material stock in the carrier pipe is stuck in the pipeline along with closing of lift check valve material feeding mouth 211, will not return at a high speed in the pump chamber, and cause the damage of centrifugal pump, a large amount of maintenance works has not only been saved in this design, save a large amount of centrifugal pump spare parts again, prolonged the working life of pump.

In the utility model embodiment, described hemisphere valve body 11 is provided with check valve seal circle 23 with check valve body 21 joints, the circumferential perimeter of sealing circle 23 is provided with chimb 231, this chimb 231 is fastened in the holding tank of hemisphere valve body 11 and check valve body 21 joints, spheroid spool 22 by with the cooperating the conducting that realizes safety check and close of check valve seal circle 23, here check valve seal circle 23 adopts such scheme, both can well be located, can play the sealing between hemisphere valve body 11 and the check valve body 21 again, certainly in the utility model embodiment, we also not the circumferential perimeter of check valve seal circle 23 be provided with chimb 231, by two independently seal ring realize sealing between spheroid spool 22 and check valve body 21 material feeding mouths 211 and the sealing between hemisphere valve body 11 and the check valve body 21, but complex structure like this, inconvenience is installed, so do not adopt usually.Be respectively arranged with supply pipe fitting seat 4 and discharge nozzle fitting seat 3 on the material feeding mouth 112 of described hemisphere valve body 11 and the discharge port 111; The discharge port 111 of described hemisphere valve body 11 is provided with the semispherical valve seal ring 13 that cooperates with hemisphere spool 12, the cross section of described semispherical valve seal ring 13 becomes " L " shape, it is conflicted on one side on discharge port 111 peripheries of hemisphere valve body 11, another side is fastened in the draw-in groove that constitutes between discharge nozzle fitting seat 3 and the hemisphere valve body 11, like this, semispherical valve seal ring 13 both can well be located, can play the sealing between hemisphere valve body 11 and the discharge nozzle fitting seat 3 again, certainly in the utility model embodiment, we also can by two independently seal ring realize sealing between hemisphere spool 12 and hemisphere valve body 11 discharge ports 111 and the sealing between hemisphere valve body 11 and the discharge nozzle fitting seat 3, but complex structure like this, inconvenience is installed, so do not adopt usually.

In the utility model embodiment, described semispherical valve device 1 is the manually operated type control valve unit, described hemisphere spool 12 is fixing by symmetrically arranged positioning shaft 121 in two ends and valve rod 122, wherein the positioning shaft 121 of an end is fixed on the hemisphere valve body 11 by setting sleeve 123 and positioning seat 124, the positioning shaft 121 of the other end is fixed on the valve rod 122, this valve rod 122 is fixed on the hemisphere valve body 11 by stuffing box 125, realizes that by filler 126 and Gland 127 motive sealings cooperate between valve rod 122 and the stuffing box 125.Certainly we also can realize electronic realization control, but this all has relation with concrete application occasion, and electronic control only needs the rotation of motor-operated control valve bar to get final product, so inner hemisphere spool 12 is the same substantially with cooperation with the connection between the hemisphere valve seat 11.Be set with check-valve lever 24 on the described spheroid spool 22, on the baffle plate that is set in check valve body 11 114 of this check-valve lever 24, described baffle plate 114 is arranged on the axle central position of the discharge port 212 of check valve body 21, during concrete the operation, non-return valve core 21 realizes that by the impact force of material it moves up and down, and baffle plate 114 plays the effect of guiding and location, after centrifugal pump quits work, non-return valve core 22 falls rapidly, constitutes with check valve seal circle 23 to be sealed and matched.

Claims (7)

1, a kind of tee centrifugal pump non-return, half-ball combination valve, it is characterized in that: include semispherical valve device and check vavle device, described semispherical valve device includes hemisphere valve body and hemisphere spool, described hemisphere spool cooperates the conducting that realizes the semispherical valve device and closes with discharge port on the hemisphere valve body, described check vavle device includes check valve body and spheroid spool, described spheroid spool cooperates the conducting that realizes safety check with material feeding mouth on the check valve body and closes, described hemisphere valve body is fixedlyed connected with check valve body, described hemisphere valve body is provided with the passage that connects with its material feeding mouth, and the material feeding mouth on this passage and the check valve body connects.

2, tee centrifugal pump according to claim 1 non-return, half-ball combination valve, it is characterized in that: described hemisphere valve body and check valve body joint are provided with the check valve seal circle, the circumferential perimeter of sealing circle is provided with chimb, this chimb is fastened in the holding tank of hemisphere valve body and check valve body joint, the spheroid spool by with the cooperating the conducting that realizes safety check and close of check valve seal circle, the discharge port of described hemisphere valve body is provided with the semispherical valve seal ring that cooperates with the hemisphere spool.

3, tee centrifugal pump according to claim 1 and 2 is characterized in that: be respectively arranged with supply pipe fitting seat and discharge nozzle fitting seat on the material feeding mouth of described hemisphere valve body and the discharge port with non-return, half-ball combination valve.

4, tee centrifugal pump according to claim 1 and 2 non-return, half-ball combination valve, it is characterized in that: described semispherical valve device is the manually operated type control valve unit, described hemisphere spool is fixed by symmetrically arranged positioning shaft in two ends and valve rod, wherein the positioning shaft of an end is fixed on the hemisphere valve body by setting sleeve and positioning seat, the positioning shaft of the other end is fixed on the valve rod, this valve rod is fixed on the hemisphere valve body by stuffing box, realizes that by filler and Gland motive sealing cooperates between valve rod and the stuffing box.

5, tee centrifugal pump according to claim 1 and 2 non-return, half-ball combination valve, it is characterized in that: be set with check-valve lever on the described spheroid spool, on the baffle plate that is set in check valve body of this check-valve lever, described baffle plate is arranged on the axle central position of the discharge port of check valve body.

6, tee centrifugal pump according to claim 3 non-return, half-ball combination valve, it is characterized in that: it is characterized in that: the cross section of described semispherical valve seal ring becomes " L " shape, it is conflicted on one side on the discharge port periphery of hemisphere valve body, and another side is fastened in the draw-in groove that constitutes between discharge nozzle fitting seat and the hemisphere valve body.

7, tee centrifugal pump according to claim 4 non-return, half-ball combination valve, it is characterized in that: be set with check-valve lever on the described spheroid spool, on the baffle plate that is set in check valve body of this check-valve lever, described baffle plate is arranged on the axle central position of the discharge port of check valve body.

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