CN209213058U

CN209213058U - A kind of ball valve

Info

Publication number: CN209213058U
Application number: CN201821912077.6U
Authority: CN
Inventors: 郏海云
Original assignee: Zhejiang Wanda Fluid Intellectual Control Ltd By Share Ltd
Current assignee: Zhejiang Wanda Fluid Intellectual Control Ltd By Share Ltd
Priority date: 2018-11-20
Filing date: 2018-11-20
Publication date: 2019-08-06
Anticipated expiration: 2028-11-20

Abstract

The utility model provides a kind of ball valve, belongs to technical field of valve manufacturing.It solves the problems such as existing ball valve use cost is high.This ball valve includes valve rod, valve body and spool, valve body has water inlet end and is in 90 ° of water outlets being arranged with water inlet end, the inner end of valve rod is connected with spool, the outer end of valve rod stretches out valve body and is connected with handle, valve body is equipped with the tank body being coaxially disposed with water inlet end, and the filling mouth of tank body is connected to water inlet end always, the buffer structure for buffer fluid pressure is equipped in tank body, spool is two-way core and is located in water outlet that tank body connect with valve body screw thread and is equipped with O-ring between the two.The utility model has the advantages that easy to loading and unloading, use cost is low etc..

Description

A kind of ball valve

Technical field

The utility model belongs to technical field of valve manufacturing, is related to a kind of ball valve.

Background technique

In the extremely short time, the flow of water surges from zero to metered flow, due to fluid with kinetic energy and to a certain degree Compressibility, therefore the great variety of flow will cause impact excessively high to the pressure of pipeline and too low in a very short period of time, Compression shock will make tube wall stress and generate noise, like hammer taps pipeline, therefore referred to as water hammer effect.Water hammer effect has Destructive: pressure is excessively high, will cause the rupture of pipe, conversely, pressure is too low and will lead to the collapsing of pipe, can also damage valve And fixing piece.

In view of the above problems, applicant devise a kind of water hammer-resistant angle valve and applied patent [application number: 201620726593.4；Authorization Notice No.: CN205824275U] comprising valve body, valve rod and spool, valve body have water inlet end With the water outlet for water inlet end being in 90 ° of settings, spool is located at the intersection of water inlet end and water outlet, inner end and the spool phase of valve rod Even, the outer end of valve rod stretches out valve body and is connected with handle, and valve body is fixed with the tank body with water inlet end coaxial arrangement, the filling mouth of tank body Be connected with valve inner, the buffer structure for buffer fluid pressure be equipped in tank body, and when spool opening and closing described in filling Mouth is connected by the water hole that spool offers with water inlet end.

Above-mentioned water hammer-resistant angle valve passes through the setting of tank body and buffer structure, can effectively prevent water hammer effect and noise reduction effect It is good, but tank body is to be fixed on valve body by riveting, therefore cannot dismantle, going wrong just needs integral replacing, uses It is at high cost, and the connection of tank body and water inlet end will be kept when spool opening and closing, complexity is processed at spool, so that structure is complicated Change.

Summary of the invention

The purpose of this utility model is to provide that a kind of spool is simple, dress for the above-mentioned problems in the prior art Unload convenient ball valve.

The purpose of this utility model can be realized by the following technical scheme: a kind of ball valve, including valve rod, valve body and valve Core, the valve body have water inlet end and are in 90 ° of water outlets being arranged, inner end and the spool phase of the valve rod with water inlet end Even, the outer end of valve rod stretches out valve body and is connected with handle, and the valve body is equipped with the tank body being coaxially disposed with water inlet end, described The filling mouth of tank body be connected to water inlet end always, the buffer structure for buffer fluid pressure is equipped in the tank body, it is special Sign is, the spool is two-way core and is located in water outlet, and the tank body is connect and between the two with valve body screw thread Equipped with O-ring.

In a kind of above-mentioned ball valve, there is the tank body outer diameter of external thread section and external thread section to be less than the outer of tank body Diameter forms shoulder block and has the annular groove being embedded in for O-ring between shoulder block and external screw thread between the tank body and external thread section, The valve body has with the internal thread segment and valve body for being matched with external screw thread linkage section in the oral area of internal thread segment to be supported for O-ring The annular inner wall of touching.

In a kind of above-mentioned ball valve, the buffer structure include be located at tank body in and by tank body be divided into air chamber and The piston core of intake antrum, the intake antrum are connected to filling mouth, and the piston core, which has, to be cylindrical in shape and extend into air chamber Sealing surface, be embedded with the sealing ring one for being tightly contacted inner tank wall on the sealing surface, the piston core is towards intake antrum The spherical convex in end.

In a kind of above-mentioned ball valve, spring is equipped in the air chamber, one end of spring is supported in tank base, bullet The other end of spring is supported in piston core.Double buffering, buffering effect are carried out to piston core by air chamber air and spring in this way Fruit is good, good operating stability, long service life.

In a kind of above-mentioned ball valve, the valve body has the valve seat of connection water inlet end, the valve close to bending place It is equipped with tubular filter screen in seat, contacts at valve interior wall at the top of the filter screen, the valve seat is threaded with It is supported on the seal receptacle of filtering sieve bottom, sealing ring two is equipped between the seal receptacle and valve seat.

In a kind of above-mentioned ball valve, check-valves is equipped in the water outlet.Check-valves avoids fluid reflux, ensure that The stability of water flow and pressure.

In a kind of above-mentioned ball valve, the check-valves includes non-return valve core and tubular valve casing, the valve casing It tightly fits in water outlet inner wall and water outlet has the step contradicted for valve casing inner end, the top of the valve casing is inserted with support Seat and support base have outward fold and by the flange of valve casing top braces, the water outlet be embedded with positioned at oral area to avoid The circlip that check-valves falls off, if the support base is connected in the middle part of support base by the circumferentially uniformly distributed floor of dry plate and is in The sleeve of tubular, the non-return valve core has the connecting column penetrated in sleeve and is cased with check spring outside connecting column, described Check spring provides elastic force and non-return valve core always and have to be sealed in the conical surface that valve casing has.

In a kind of above-mentioned ball valve, sealing ring three, the non-return valve core are equipped between the valve casing and water outlet It is embedded with the sealing ring four for being sealed in the valve casing conical surface.Guarantee the leakproofness at two in this way.

Compared with prior art, the structure of this ball valve is simple, and assembly and disassembly are convenient, and use cost is low, can prevent water hammer Effect, and there is filtering function, guarantee that effluent quality is good, also there is check function, guarantees the stabilization of water flow and pressure Property.

Detailed description of the invention

Fig. 1 is the structure sectional view of this ball valve.

Fig. 2 is the structure sectional view of another angle of this ball valve.

In figure, 1, valve rod；2, valve body；2a, water inlet end；2b, water outlet；2c, valve seat；3, spool；4, handle；5, tank body； 5a, external thread section；5b, shoulder block；5c, air chamber；5d, intake antrum；6, O-ring；7, piston core；7a, sealing surface；8, sealing ring One；9, filter screen；10, seal receptacle；11, sealing ring two；12, non-return valve core；12a, connecting column；13, valve casing；14, support base； 14a, flange；15, circlip；16, floor；17, sleeve；18, check spring；19, sealing ring three；20, sealing ring four.

Specific embodiment

It is specific embodiment of the utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further Description, but the utility model is not limited to these examples.

As depicted in figs. 1 and 2, this ball valve includes valve rod 1, valve body 2 and spool 3, valve body 2 have water inlet end 2a and with water inlet Holding 2a is in the water outlet 2b of 90 ° of settings, and the inner end of valve rod 1 is connected with spool 3, the outer end stretching valve body 2 of valve rod 1 and with handle 4 It is connected, valve body 2 is equipped with the tank body 5 being coaxially disposed with water inlet end 2a, and the filling mouth of tank body 5 is connected to water inlet end 2a, tank body 5 always The interior buffer structure being equipped with for buffer fluid pressure, spool 3 is two-way core and is located in the 2b of water outlet, tank body 5 and valve body 2 It is threadedly coupled and is equipped with O-ring 6 between the two.

This valve plug in ball valve 3 is located in the 2b of water outlet, so fluid in water inlet end 2a will not be hindered to enter the filling mouth of tank body 5 Interior, spool 3 is common two-way core, and structure is simple, at low cost, and tank body 5 is used with valve body 2 and is threadedly coupled so that group Dress is convenient, encounters problems and is also convenient for dismantling, facilitates maintenance, reduce use cost；This ball valve is in use, the filling mouth of tank body 5 begins It is connected eventually with water inlet end 2a, therefore the Fluid pressure in water inlet end 2a can all be buffered by buffer structure, it is therefore prevented that water hammer Effect.

It further describes in detail, there is tank body 5 outer diameter of external thread section 5a and external thread section 5a to be less than tank body 5 in the present embodiment Outer diameter forms shoulder block 5b and has the ring being embedded in for O-ring 6 between shoulder block 5b and external screw thread between tank body 5 and external thread section 5a Shape slot, oral area of the valve body 2 with the internal thread segment and valve body 2 for being matched with external screw thread linkage section in internal thread segment have for O-ring 6 The annular inner wall of conflict.Tank body 5 is easy to process in this way, and shoulder block 5b contacts at valve body 2 and plays position-limiting action when connection, avoids excessively It squeezes O-ring 6 and damages, ensure that the leakproofness between tank body 5 and valve body 2.

Buffer structure includes interior positioned at tank body 5 and tank body 5 is divided into the piston core 7 of air chamber 5c and intake antrum 5d, into Water cavity 5d is connected to filling mouth, and piston core 7 has the sealing surface 7a for being cylindrical in shape and extending into air chamber 5c, is embedded on sealing surface 7a There are two the sealing ring 1 for being tightly contacted 5 inner wall of tank body, the spherical convex in the end of piston core 7 towards intake antrum 5d.Piston core 7 circumferential good airproof performances, spherical surface is good compared with the anti-pressure ability of plane, this end resist fluids pressure capability of piston core 7 is good, will not be flowed Body impact is at being recessed inwardly and deformation, good operating stability；Fluid pressure acts on piston core 7, and piston core 7 is to the side air chamber 5c Mobile, the air in air chamber 5c buffers piston core 7, and after eliminating Fluid pressure, the air in air chamber 5c makes Piston core 7 resets.

Valve body 2 has the valve seat 2c of connection water inlet end 2a close to bending place, is equipped with tubular filter screen 9 in valve seat 2c, The top of filter screen 9 contacts at 2 inner wall of valve body, and valve seat 2c is threaded with the seal receptacle 10 for being supported on 9 bottom of filter screen, sealing Sealing ring 2 11 is equipped between 10 and valve seat 2c of seat.Filter screen 9 can filter impurity in fluid, so that water outlet is clean, use one section Seal receptacle 10 can be screwed out after time to carry out blowdown, guarantee to clean at filter screen 9.

Check-valves is equipped in the 2b of water outlet, check-valves includes non-return valve core 12 and tubular valve casing 13,13 close-fitting of valve casing Together in water outlet 2b inner wall and water outlet 2b has the step contradicted for 13 inner end of valve casing, and the top of valve casing 13 is inserted with support base 14 and support base 14 have outward fold and by the flange 14a of 13 top braces of valve casing, water outlet 2b be embedded with positioned at oral area with The circlip 15 for avoiding check-valves from falling off, support base 14 are connected with by four circumferentially uniformly distributed floors 16 positioned at 14 middle part of support base And tubular sleeve 17, non-return valve core 12 have the connecting column 12a penetrated in sleeve 17 and are cased with non-return bullet outside connecting column 12a Spring 18, check spring 18 provide elastic force make non-return valve core 12 always have be sealed in the conical surface that valve casing 13 has, 13 He of valve casing Sealing ring 3 19 is equipped between the 2b of water outlet, non-return valve core 12 is embedded with the sealing ring 4 20 for being sealed in 13 conical surface of valve casing.Fluid The elastic force of check spring 18 is overcome to wash non-return valve core 12 open, realizes water outlet, and when there is return water, the pressure of return water adds non-return The elastic force of spring 18 can make non-return valve core 12 reseal to realize check function, guarantee the stabilization of water flow and pressure.

The content being not described in detail in this specification belongs to the prior art well known to professional and technical personnel in the field.Herein Described in specific embodiment be only the spirit of the present invention is given an example.The utility model technical field Technical staff can make various modifications or additions to the described embodiments or be substituted in a similar manner, but Without departing from the spirit of the present application or beyond the scope of the appended claims.

Claims

1. a kind of ball valve, including valve rod (1), valve body (2) and spool (3), the valve body (2) has water inlet end (2a) He Yujin Water end (W.E.) (2a) is in the water outlet (2b) of 90 ° of settings, and the inner end of the valve rod (1) is connected with spool (3), the outer end of valve rod (1) It stretching out valve body (2) and is connected with handle (4), the valve body (2) is equipped with the tank body (5) being coaxially disposed with water inlet end (2a), The filling mouth of the tank body (5) is connected to water inlet end (2a) always, is equipped in the tank body (5) for buffer fluid pressure Buffer structure, which is characterized in that the spool (3) be two-way core and be located at water outlet (2b) in, the tank body (5) with Valve body (2) is threadedly coupled and is equipped with O-ring (6) between the two.

2. a kind of ball valve according to claim 1, which is characterized in that the tank body (5) have external thread section (5a) and The outer diameter of external thread section (5a) is less than the outer diameter of tank body (5), forms shoulder block between the tank body (5) and external thread section (5a) There is the annular groove being embedded in for O-ring (6), the valve body (2), which has, to be matched between (5b) and shoulder block (5b) and external screw thread The internal thread segment and valve body (2) of external screw thread linkage section have the annular inner wall contradicted for O-ring (6) in the oral area of internal thread segment.

3. a kind of ball valve according to claim 1 or 2, which is characterized in that the buffer structure includes being located at tank body (5) Piston core (7) interior and that tank body (5) is divided into air chamber (5c) and intake antrum (5d), the intake antrum (5d) are connected to filling Mouthful, the piston core (7) has the sealing surface (7a) for being cylindrical in shape and extending into air chamber (5c), the sealing surface (7a) On be embedded with the sealing ring one (8) for being tightly contacted tank body (5) inner wall, the end of the piston core (7) towards intake antrum (5d) is in Spherical surface hill shape.

4. a kind of ball valve according to claim 3, which is characterized in that be equipped with spring, spring in the air chamber (5c) One end be supported in tank body (5) bottom, the other end of spring is supported in piston core (7).

5. a kind of ball valve according to claim 3, which is characterized in that the valve body (2) has connection close to bending place The valve seat (2c) of water inlet end (2a) is equipped with tubular filter screen (9) in the valve seat (2c), the filter screen (9) Top contacts at valve body (2) inner wall, and the valve seat (2c) is threaded with the seal receptacle for being supported on filter screen (9) bottom (10), sealing ring two (11) is equipped between the seal receptacle (10) and valve seat (2c).

6. a kind of ball valve according to claim 5, which is characterized in that be equipped with check-valves in the water outlet (2b).

7. a kind of ball valve according to claim 6, which is characterized in that the check-valves includes non-return valve core (12) and is in The valve casing (13) of tubular, the valve casing (13) tightly fits in water outlet (2b) inner wall and water outlet (2b) has for valve casing (13) The step that inner end contradicts, the top of the valve casing (13) is inserted with support base (14) and support base (14) has fold outward simultaneously By the flange (14a) of valve casing (13) top braces, the water outlet (2b), which is embedded with, to fall off positioned at oral area to avoid check-valves Circlip (15), the support base (14) by the circumferentially uniformly distributed floor (16) of dry plate if be connected in support base (14) Portion and tubular sleeve (17), the non-return valve core (12) have the connecting column (12a) penetrated in sleeve (17) and connect It is cased with check spring (18) outside column (12a), the check spring (18) provides elastic force and non-return valve core (12) is had always It is sealed in the conical surface that valve casing (13) has.

8. a kind of ball valve according to claim 7, which is characterized in that set between the valve casing (13) and water outlet (2b) There is sealing ring three (19), the non-return valve core (12) is embedded with the sealing ring four (20) for being sealed in valve casing (13) conical surface.