CN110630787A

CN110630787A - Float type anti-upstream check valve

Info

Publication number: CN110630787A
Application number: CN201910742562.6A
Authority: CN
Inventors: 刘广和; 陈磊; 查金平; 江鸿; 周彪
Original assignee: ANHUI TONGDU FLOW TECHNOLOGY Co Ltd
Current assignee: ANHUI TONGDU FLOW TECHNOLOGY Co Ltd
Priority date: 2019-08-13
Filing date: 2019-08-13
Publication date: 2019-12-31

Abstract

The invention relates to the technical field of check valves and discloses a float-type anti-overflow check valve which comprises a valve body, wherein the bottom of the valve body is fixedly communicated with a lower connecting flange, the top of the valve body is fixedly communicated with an upper connecting flange, the lower connecting flange is connected with the valve body through a first bolt, the upper connecting flange is connected with the valve body through a second bolt, a float is movably connected in the valve body, a valve rod is movably connected in the float, the bottom of the valve rod is fixedly connected with a valve bolt, rubber pads are fixedly arranged on the top edges of two sides of the float, and sealing pads are fixedly arranged on the tops of fixing blocks on the tops of the. The upper connecting flange is fixed at the top of the valve body through the first bolt, the lower connecting flange is fixedly installed at the bottom of the valve body through the second bolt, the baffle is installed at the bottom of the valve body, the valve rod is fixed through the baffle, and the float bowl is movably connected with the valve rod through the valve rod, so that the effect of controlling water inlet of the water tank can be achieved without occupying places other than the water tank.

Description

Float type anti-upstream check valve

Technical Field

The invention relates to the technical field of check valves, in particular to a float-type anti-upstream check valve.

Background

Valves are widely used for fluid control, and their function and structure are different according to different conditions and requirements. In particular, the use of check valves is becoming increasingly more automated, and it is becoming common to control the opening and closing of check valves by the flow and pressure of the fluid itself.

When flushing high-level water tanks of high-rise buildings and the like, water flows into the water tank easily through a water outlet pipe of the water tank, a water stop valve is needed, a complex pipeline system is connected to the common check valve in the installation of the occasions, and the installation of the complex pipeline system is completed in places except the water tank.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides the float-type anti-overflow check valve which has the advantage of completing water inlet control of the water tank without occupying a place except the water tank, and solves the problem that a traditional water stop valve system needs to occupy a place except the water tank to complete installation of a complex pipeline system.

(II) technical scheme

In order to realize the purpose that the water inlet control of the water tank can be completed without occupying a place except the water tank, the invention provides the following technical scheme: the float-type anti-upstream check valve comprises a valve body, wherein the bottom of the valve body is fixedly communicated with a lower connecting flange, the top of the valve body is fixedly communicated with an upper connecting flange, two opposite inner walls of the valve body are fixedly connected with fixed blocks, a polytetrafluoroethylene gasket is fixedly arranged at the bottom of the valve body, the upper surface of the left side of the upper connecting flange is provided with a first round hole, the surface of the fixed block at the top of the valve body is provided with a first round groove, the inner walls of the first round hole and the first round groove are movably connected with a first bolt, the lower surface of the left side of the lower connecting flange is provided with a second round hole, the surface of the fixed block at the bottom of the valve body is provided with a second round groove, the inner walls of the second round hole and the second round groove are movably connected with a second bolt, the surface of the, column recess inner wall fixedly connected with valve cock, valve cock top fixedly connected with valve rod, valve rod outer wall swing joint has the column deep trouth, column deep trouth bottom fixed mounting has 0 type ring, column deep trouth outer wall fixedly connected with flotation pontoon, flotation pontoon both sides top edge fixed mounting has the rubber pad, two the breach has all been seted up at the fixed block top at valve body top, the inside fixed mounting of breach has sealed the pad.

Preferably, the buoy is made of stainless steel, and the buoy needs to be soaked in water for a long time and must be made of a material which is not easy to corrode, so that frequent replacement of the buoy after corrosion can be avoided.

Preferably, the valve body, the lower connecting flange and the upper connecting flange are all made of steel pipes, and the pressure resistance of a flowing water channel is good due to the fact that water pressure is high.

Preferably, the distance between the two rubber pads is equal to the distance between the two sealing gaskets, and only the rubber pads can abut against the lower surfaces of the sealing gaskets to realize sealing.

Preferably, the baffle is long, and too much space occupied by the baffle affects the flow of water flowing through the valve body, so that the drainage is not smooth.

Preferably, the lower connecting flange, the upper connecting flange and the valve body are respectively provided with a rubber pad in contact, and the connection between steel and iron does not have airtightness, so that the sealing performance can be achieved only by additionally arranging the rubber pads, and the water is prevented from leaking.

Preferably, the surfaces of the second bolt and the first bolt are provided with threads, the inner walls of the second circular groove and the first circular groove are provided with thread grooves, and the lower connecting flange, the upper connecting flange and the valve body can be tightly locked together only by matching the threads on the surfaces of the second bolt with the thread grooves on the inner walls of the second circular groove.

Preferably, the top of the cylindrical deep groove is sealed.

(III) advantageous effects

Compared with the prior art, the invention provides a float-type anti-upstream check valve which has the following beneficial effects:

1. this check valve is prevented upstream by float formula will go up flange through bolt cooperation round hole one and circle recess one and fix at the valve body top, and flange fixed mounting will descend in the valve body bottom through bolt cooperation round hole two and circle recess two, and the rethread is at valve body bottom installation baffle, through the fixed valve rod of baffle, through valve rod swing joint flotation pontoon to reach and need not to occupy the place beyond the water tank and can accomplish the effect of water tank control of intaking.

2. This float-type anti-overflow check valve through seting up the column deep trouth at the flotation pontoon center, cup joints the valve rod in the activity of column deep trouth inside, and the rethread is with valve rod fixed mounting at the valve cock top, can realize that the flotation pontoon slides along the column deep trouth to reach and move up the flotation pontoon and can prevent the rivers upstream with sealed pad contact, move down the flotation pontoon and can allow the stagnant water valve effect of rivers downstream.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic front view of the valve body according to the present invention.

In the figure: 1-valve body, 2-lower connecting flange, 3-upper connecting flange, 4-fixed block, 5-round hole I, 6-round groove I, 7-bolt I, 8-round hole II, 9-round groove II, 10-bolt II, 11-bolt III, 12-baffle, 13-columnar groove, 14-valve bolt, 15-valve rod, 16-columnar deep groove, 17-0 type ring, 18-rubber pad, 19-buoy, 20-notch, 21-sealing pad, 22-tetrafluoro gasket.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-2, the float-type anti-overflow check valve comprises a valve body 1, a lower connecting flange 2 is fixedly communicated with the bottom of the valve body 1, an upper connecting flange 3 is fixedly communicated with the top of the valve body 1, the lower connecting flange 2 and the upper connecting flange 3 are all made of steel pipes, the pressure resistance of a flowing channel is good due to high water pressure, rubber pads are respectively arranged on the lower connecting flange 2 and the upper connecting flange 3 in contact with the valve body 1, rubber pads are respectively arranged on the lower connecting flange 2 and the upper connecting flange 3 because the steel is not sealed, the sealing performance can be achieved only by additionally arranging the rubber pads, water leakage is prevented, fixing blocks 4 are fixedly connected with two opposite inner walls of the valve body 1, a tetrafluoro gasket 22 is fixedly arranged at the bottom of the valve body 1, a circular hole one 5 is arranged on the upper surface of the left side of the upper connecting flange 3, a circular groove one 6 is arranged on the, the lower surface of the left side of the lower connecting flange 2 is provided with a round hole II 8, the surface of a fixed block 4 at the bottom of the valve body 1 is provided with a round groove II 9, the inner walls of the round hole II 8 and the round groove II 9 are movably connected with a bolt II 10, the surfaces of the bolt II 10 and a bolt I7 are provided with threads, the inner walls of the round groove II 9 and the round groove I6 are provided with thread grooves, the threads on the surface of the bolt II 10 are matched with the thread grooves on the inner walls of the round groove II 9 to tightly lock the lower connecting flange 2, the upper connecting flange 3 and the valve body 1 together, the left surface of the valve body 1 is fixedly connected with a bolt III 11, a baffle plate 12 is fixedly connected between the fixed blocks 4 at the bottom of the two valve bodies 1, the baffle plate 12 is in a strip shape, the space occupied by the baffle plate 12 greatly influences the flow rate of water flow, 14 top fixedly connected with valve rod 15 of valve cock, 15 outer wall swing joint of valve rod has column

deep trouth

16, 16 top sealings in column deep trouth, 16 bottom fixed mounting in column deep trouth have 0

type ring

17, 16 outer wall fixedly connected with flotation pontoon 19 in column deep trouth, flotation pontoon 19 is made by stainless steel material, because flotation pontoon 19 needs long-term bubble in aqueous, must be difficult for the material of corrosion to make, just can avoid the frequent change after the corrosion of flotation pontoon 19, 19 both sides top edge fixed mounting in flotation pontoon has rubber pad 18, distance between two rubber pads 18 equals the distance between two sealed pads 21, only so rubber pad 18 can reach sealed lower surface realization of filling up 21 and seal, breach 20 has all been seted up at the fixed block 4 tops at two 1 tops of valve body, breach 20 inside fixed mounting has sealed pad 21.

The working principle is that the lower connecting flange 2 is hermetically connected with the valve body 1 through the bolt II 10 matched with the round hole II 8 and the round groove II 9 in a threaded manner, and then the valve body 3 is hermetically connected with the valve body 1 through the bolt I7 matched with the round hole I5 and the round groove I6 in a threaded manner, so that the valve body 1, the lower connecting flange 2 and the upper connecting flange 3 form a sealed whole, when water flow needs to flow into the valve body 1 from the upper connecting flange 3, the water pressure of the upper connecting flange 3 can press the buoy 19 downwards along the valve rod 15, the valve rod 15 is movably sleeved with the columnar deep groove 16, when the buoy 19 is pressed downwards, the water flow flowing in from the upper connecting flange 3 always exerts pressure on the buoy 19, so that the buoy 19 cannot move upwards to keep the pipeline between the upper connecting flange 3 and the valve body 1 smooth, when the water in the lower connecting flange 2 enters the upper connecting flange 3 through the valve body 1, because the flotation pontoon 19 is hollow, buoyancy can be very big, simultaneously valve bolt 14 is with baffle 12 fixed connection, valve rod 15 is fixedly connected again to valve bolt 14's top, the thick groove 16 of column cup joints outside valve rod 15, the thick groove 16 of column and flotation pontoon 19 fixed connection, rivers will make flotation pontoon 19 rise along valve rod 15 because of receiving buoyancy in valve body 1, it is very tight because the pushing action of buoyancy and the extrusion is contacted with sealed pad 21 and because of rubber pad 18, the leakproofness of breach 20 is very good, can not make rivers upward flow in last flange 3, thereby realized preventing the function that rivers flowed.

In conclusion, the upper connecting flange 3 is fixed at the top of the valve body 1 through the first bolt 7, the first round hole 5 and the first round groove 6, the lower connecting flange 2 is fixedly arranged at the bottom of the valve body 1 through the second bolt 10, the second round hole 8 and the second round groove 9, the baffle 12 is arranged at the bottom of the valve body 1, the valve rod 15 is fixed through the baffle 12, and the valve rod 15 is movably connected with the buoy 19 through the valve rod 15, so that the effect of controlling water inlet of the water tank can be achieved without occupying a place except the water tank; through set up column deep trouth 16 in the flotation pontoon 19 center, at column deep trouth 16 inside activity cup joint valve rod 15, rethread with valve rod 15 fixed mounting at valve bolt 14 top, can realize that flotation pontoon 19 slides along column deep trouth 16 to reach and move up flotation pontoon 19 and sealed 21 contact and can prevent rivers upward flow, move down the stagnant water valve effect that flotation pontoon 19 can allow rivers to flow down.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Float-type anti-upstream check valve, including valve body (1), its characterized in that: the bottom of the valve body (1) is fixedly communicated with a lower connecting flange (2), the top of the valve body (1) is fixedly communicated with an upper connecting flange (3), two opposite inner walls of the valve body (1) are fixedly connected with fixing blocks (4), the bottom of the valve body (1) is fixedly provided with a PTFE gasket (22), the upper surface of the left side of the upper connecting flange (3) is provided with a first round hole (5), the surface of the fixing block (4) at the top of the valve body (1) is provided with a first round groove (6), the inner walls of the first round hole (5) and the first round groove (6) are movably connected with a first bolt (7), the lower surface of the left side of the lower connecting flange (2) is provided with a second round hole (8), the surface of the fixing block (4) at the bottom of the valve body (1) is provided with a second round groove (9), and the inner walls of, a third bolt (11) is fixedly connected to the left side surface of the valve body (1), a baffle plate (12) is fixedly connected between the fixing blocks (4) at the bottom of the two valve bodies (1), a columnar groove (13) is arranged at the center of the baffle (12), a valve bolt (14) is fixedly connected with the inner wall of the columnar groove (13), the top of the valve bolt (14) is fixedly connected with a valve rod (15), the outer wall of the valve rod (15) is movably connected with a columnar deep groove (16), the bottom of the columnar deep groove (16) is fixedly provided with a 0-shaped ring (17), the outer wall of the columnar deep groove (16) is fixedly connected with a buoy (19), the floating cylinder (19) is characterized in that rubber pads (18) are fixedly mounted at the top edges of two sides of the floating cylinder (19), a notch (20) is formed in the top of the fixed block (4) at the top of the valve body (1), and a sealing pad (21) is fixedly mounted in the notch (20).

2. The float-type anti-overflow check valve of claim 1, wherein: the buoy (19) is made of stainless steel.

3. The float-type anti-overflow check valve of claim 1, wherein: the valve body (1), the lower connecting flange (2) and the upper connecting flange (3) are all made of steel pipes.

4. The float-type anti-overflow check valve of claim 1, wherein: the distance between the two rubber gaskets (18) is equal to the distance between the two sealing gaskets (21).

5. The float-type anti-overflow check valve of claim 1, wherein: the baffle (12) is long.

6. The float-type anti-overflow check valve of claim 1, wherein: the lower connecting flange (2) and the upper connecting flange (3) are in contact with the valve body (1) and are provided with rubber pads.

7. The float-type anti-overflow check valve of claim 1, wherein: the surfaces of the second bolt (10) and the first bolt (7) are provided with threads, and the inner walls of the second circular groove (9) and the first circular groove (6) are provided with thread grooves.