CN204175976U - A kind of sewage draining exit opens and closes the reliable pneumatic ball valve of operation - Google Patents

Abstract

The utility model relates to valve technology field; The technical solution of the utility model is: a kind of sewage draining exit opens and closes the reliable pneumatic ball valve of operation, be positioned at valve seat mouth in its blowdown valve valve body and be provided with step hole slot away from steel ball one end, top pressure spring steel ball being pushed away valve seat mouth is provided with in described step hole slot, described top pressure spring one end is pressed on step hole groove bottom, the top pressure spring the other end is pressed on steel ball, and described steel ball is conflicted in puller bolt end through top pressure spring.Blowdown valve reasonable in design of the present utility model, has sewage draining exit open operation reliable, and seals reliable advantage.

Description

A kind of sewage draining exit opens and closes the reliable pneumatic ball valve of operation

Technical field

The utility model relates to valve technology field, is specifically related to a kind of pneumatic ball valve.

Background technique

Ball valve (ball valve), is defined as in standard GB/T21465-2008 " valve term ": open-shut device (spheroid) is driven by valve rod, and around the valve that the axis of valve rod rotates.

The main structure of existing ball valve is: include valve body, valve pocket is provided with in valve body, and divide the fluid inlet being located at valve pocket both sides and being also communicated with, fluid output, valve seat is provided with in valve pocket, and the globe disk to coordinate with valve base sealing, globe disk is provided with fluid through-hole, move through supporting shaft bottom globe disk and fit over body base, globe disk top is connected with valve rod, valve rod one end is connected with globe disk, the valve rod the other end passes valve body and is connected with pneumatic actuator, be sealed and matched through valve rod sealing device between described valve rod and valve body, sewage draining exit is typically provided with at body base, for the discharge of foreign material in valve pocket, traditional sewage draining exit place is provided with blowdown bolt, the keying realizing sewage draining exit by screwing in and screw out blowdown bolt controls, there is blowdown bolt and be repeatedly screwed into from sewage draining exit and back out in it, exist and hold flimsy defect, if the thread damage of sewage draining exit, then cause scrapping of whole valve body.

For solving the problem of sewage draining exit reliability, the sewage draining exit of existing ball valve usually arranges blowdown valve and carries out keying control, there is the insecure problem of sealing in traditional blowdown valve, for this reason, China Patent No. is " filth-discharging valve for valve " disclosed in 200620136352.0 patent documentations (Authorization Notice No. is: CN 201003621Y), its main structure is: a kind of blowdown valve, sewage draining exit place on the valve body being arranged on ball valve, comprise cylindric blowdown valve valve body, blowdown valve body wall has exhaust port, spinning sewage draining exit place on the valve body of ball valve, blowdown valve valve body one end, the other end of blowdown valve valve body has screwed puller bolt, sealing inclined-plane is provided with in blowdown valve valve body, form conical valve seat mouth, puller bolt abuts and is combined with steel ball, steel ball coordinates the keying realizing blowdown valve to control with conical valve seat mouth.By steel ball and conical valve seat mouth, effectively can solve the defects such as the sealing of existing blowdown valve is unreliable, working life is short, time-consuming, narrow application range, avoid the evaporating, emitting, dripping or leaking of liquid or gas at valve in use sewage draining exit place.

But still there is following defect in it: 1) steel ball and conical valve seat mouth compression fit, when steel ball coordinates tension with spherical valve seat mouth, only rely on the fluid forces steel ball of sewage draining exit to open blowdown valve, be not easy to open steel ball, there is the easy stuck problem of steel ball, thus it is unreliable to cause sewage draining exit to be opened;

2) after a certain period of use time, steel ball is washed away by foreign material, there is being sealed and matched of steel ball and valve seat mouth unreliable, there is sewage draining exit place and drips to emit and occur leaking, cause the unreliable problem of the sealing of sewage draining exit.

And the valve body of existing ball valve or adopt one machine shaping, exist valve body processing inconvenience and flap and valve seat construction assembling inconvenience problem; Or adopt with the valve body of valve pocket, install fluid inlet/outlet at valve body two ends and form special fluid inlet and outlet pipe, valve body parts processing makes processing more convenient, flap and valve seat easy to assembly, but there is the inconvenient problem of valve body assembling itself.

Summary of the invention

For the deficiency that prior art exists, the purpose of this utility model is to provide a kind of blowdown valve reasonable in design, and sewage draining exit place opens and closes the pneumatic ball valve of convenient and reliable operation.

For achieving the above object, the utility model provides following technological scheme: a kind of sewage draining exit opens and closes the reliable pneumatic ball valve of operation, comprise the ball valve body with valve pocket, ball valve body is provided with the fluid entering channel be communicated with valve pocket, fluid outlet passage, valve seat is provided with in valve pocket, and the globe disk to coordinate with valve base sealing, globe disk is provided with fluid through-hole, moving through supporting shaft bottom globe disk fits over bottom ball valve body, globe disk top is connected with valve rod, valve rod passes valve body relative to the other end being connected one end with globe disk and is connected with pneumatic actuator, be sealed and matched through valve rod sealing device between described valve rod and valve body, sewage draining exit is typically provided with bottom ball valve body, sewage draining exit place is provided with blowdown valve, blowdown valve includes cylindric blowdown valve valve body, spinning sewage draining exit place on ball valve body, blowdown valve valve body one end, the other end of blowdown valve valve body has screwed puller bolt, blowdown valve body wall has exhaust port, conical valve seat mouth is provided with in blowdown valve valve body, puller bolt abuts steel ball, steel ball coordinates with conical valve seat mouth, it is characterized in that: be positioned at valve seat mouth in described blowdown valve valve body and be provided with step hole slot away from steel ball one end, top pressure spring steel ball being pushed away valve seat mouth is provided with in described step hole slot, described top pressure spring one end is pressed on step hole groove bottom, the top pressure spring the other end is pressed on steel ball, described steel ball is conflicted in puller bolt end through top pressure spring.

By adopting technique scheme, when open operation, top pressure spring provides steel ball and to lift off a seat the spring force of mouth, make unlatching more reliable, ensure that the sealing of steel ball and valve seat mouth compresses reliably simultaneously, effectively avoid steel ball stuck phenomenon, improve sealability, and it is more reliably light to reach unlatching; Puller bolt screws in and realizes in closing process in pushing tow steel ball inserted valve seat mouth simultaneously, and top pressure spring provides certain reverse resistance, and make blowdown valve closing operation feel better, operation is reliable.

The utility model is set to further: be positioned at conical valve seat mouth in described blowdown valve valve body and be axially provided with the second valve seat bench port towards exhaust port one end, second valve seat bench port is between conical valve seat mouth and exhaust port, described puller bolt coordinates end, one end to be provided with shutoff end face with steel ball, the shutoff end face of described puller bolt and the second valve seat bench port are conflicted and are sealed and matched, and the shutoff end face of puller bolt is provided with the seal ring realizing shutoff end face and the second valve seat bench port and be sealed and matched.

By adopting technique scheme, steel ball and conical valve seat interruption-forming first seal, puller bolt and the second valve seat bench port form second and seal, common formation double sealing controls, after there is erosive wear in steel ball, puller bolt provides two roads sealings, thus stops the leakage of sewage draining exit, effectively extends blowdown valve working life.

The utility model is set to further: described puller bolt and steel ball counterface offer the spring eye along puller bolt axis, Compress Spring and push plate is provided with in spring eye, Compress Spring one end is bearing in bottom spring eye, the Compress Spring the other end is pressed in push plate, spacing being assemblied in spring eye of described push plate also can slide axially along spring eye, described steel ball is connected in push plate, and the oral area of described spring eye and steel-ball limiting form described puller bolt top pressing steel balls and be engaged in conical valve seat mouth.

By adopting technique scheme, realizing puller bolt floating support steel ball, steel ball being coordinated with puller bolt more reliable.

The utility model is set to further: the oral area of described spring eye is the spherical enlarging with steel ball gabarit adaptation.

By adopting technique scheme, steel ball is coordinated more reliable with puller bolt.

The utility model is set to further: described ball valve body includes the valve body with fluid outlet passage and part valve pocket, and enter flange base with the fluid of fluid entering channel and part valve pocket, the main body of valve pocket is positioned at described valve body, enter on flange base at fluid and there is spherical crown shape valve pocket local, fluid enters flange base one end and is provided with mounting flange, valve body is positioned at valve pocket and is provided with away from one end of fluid outlet spout and enters with fluid the flange plate that on flange base, mounting flange coordinates, described fluid enters flange base and is assemblied on the flange plate of valve body through mounting flange, fluid enters in flange base and is provided with joint, spherical crown shape valve pocket local the ball seat installation step assembled for valve seat.

By adopting technique scheme, valve body structure is reasonable in design, namely facilitates being processed to form of valve body, facilitates being assemblied in valve pocket of valve seat and globe disk simultaneously.

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

Accompanying drawing explanation

Fig. 1 is that the utility model specific embodiment sewage draining exit opens and closes the reliable pneumatic ball valve structural representation of operation;

Fig. 2 is Figure 1A part partial enlarged view.

Embodiment

See accompanying drawing 1 and accompanying drawing 2, a kind of sewage draining exit disclosed in the utility model opens and closes the reliable pneumatic ball valve of operation, comprise the ball valve body 1 with valve pocket 11, ball valve body 1 is provided with the fluid entering channel 12 be communicated with valve pocket 11, fluid outlet passage 13, valve seat 2 is provided with in valve pocket 11, and the globe disk 3 to be sealed and matched with valve seat 2, globe disk 3 is provided with fluid through-hole 31, moving through supporting shaft 4 bottom globe disk 3 fits over bottom ball valve body 1, globe disk 3 top is connected with valve rod 5, valve rod 5 passes valve body 1 relative to the other end being connected one end with globe disk 3 and is connected with pneumatic actuator 6, be sealed and matched through valve rod sealing device 7 between described valve rod 1 and valve body 2, sewage draining exit 14 is typically provided with bottom ball valve body 1, sewage draining exit 14 place is provided with blowdown valve 8.Described blowdown valve 8 includes cylindric blowdown valve valve body 81, blowdown valve valve body 81 one end spinning sewage draining exit 14 place on ball valve body 1, the other end of blowdown valve valve body 1 has screwed puller bolt 82, blowdown valve valve body 81 sidewall has exhaust port 83, conical valve seat mouth 84 is provided with in blowdown valve valve body 81, puller bolt 82 abuts steel ball 85, and steel ball 85 coordinates with conical valve seat mouth 84.Be positioned at valve seat mouth 84 in described blowdown valve valve body 81 and be provided with step hole slot 86 away from steel ball 85 one end, the top pressure spring 87 steel ball 85 being pushed away valve seat mouth 84 is provided with in described step hole slot 86, described top pressure spring 87 one end is pressed on bottom step hole slot 86, top pressure spring 87 the other end is pressed on steel ball 85, and described steel ball 85 is conflicted in puller bolt 82 end through top pressure spring 87.When open operation, top pressure spring provides steel ball and to lift off a seat the spring force of mouth, makes to open more reliable, ensure that the sealing of steel ball and valve seat mouth compresses reliably simultaneously, effectively avoid steel ball stuck phenomenon, improve sealability, and it is more reliably light to reach unlatching; Puller bolt screws in and realizes in closing process in pushing tow steel ball inserted valve seat mouth simultaneously, and top pressure spring provides certain reverse resistance, and make blowdown valve closing operation feel better, operation is reliable.

Wherein, be positioned at conical valve seat mouth 84 in described blowdown valve valve body 81 and be axially provided with the second valve seat bench port 80 towards exhaust port 83 one end, second valve seat bench port 80 is between conical valve seat mouth 84 and exhaust port 83, described puller bolt 82 coordinates end, one end to be provided with shutoff end face 821 with steel ball 85, the shutoff end face 821 of described puller bolt 82 and the second valve seat bench port 80 are conflicted and are sealed and matched, and the shutoff end face 821 of puller bolt 82 is provided with the seal ring 822 realizing shutoff end face 821 and the second valve seat bench port 80 and be sealed and matched.Steel ball and conical valve seat interruption-forming first seal, and puller bolt and the second valve seat bench port form second and seal, and the common double sealing that formed controls, after there is erosive wear in steel ball, puller bolt provides two roads sealings, thus stops the leakage of sewage draining exit, effectively extends blowdown valve working life.

More reliable for making puller bolt coordinate with steel ball, described puller bolt 82 and steel ball 82 counterface offer the spring eye 823 along puller bolt 82 axis, Compress Spring 824 and push plate 825 is provided with in spring eye 823, Compress Spring 824 one end is bearing in bottom spring eye 823, Compress Spring 824 the other end is pressed in push plate 825, spacing being assemblied in spring eye 823 of described push plate 825 also can slide axially along spring eye 823, annular stop seat 826 is provided with at the port of spring eye 823, annular stop seat 826 by spacing for push plate 825 in spring eye 823, described steel ball 85 is connected in push plate 825, the oral area of described spring eye 823 and the described puller bolt 82 of the spacing formation of steel ball 85 push up pressing steel balls 85 and are engaged in conical valve seat mouth 84.Further, the oral area 8231 of described spring eye 823 is the spherical enlarging 8231 with steel ball 85 gabarit adaptation.Realize puller bolt floating support steel ball like this, steel ball is coordinated with puller bolt more reliable.

During the sewage draining exit closed condition of ball valve, puller bolt pushing tow steel ball, compression top pressure spring, and pushing tow push plate compression Compress Spring, the spring eye oral area of steel ball and puller bolt is conflicted spacing, steel ball is pressed on realization in conical valve seat mouth and seals; Meanwhile, on the shutoff end face of puller bolt, seal ring is pressed in the second valve seat bench port and realizes second sealing; Ensure that the closedown of sewage draining exit is reliable, prevent from revealing and improving working life; The design of push plate and Compress Spring, with the quality of fit requirement of the second valve seat bench port on the shutoff end face that can weaken puller bolt, makes its more easy realization and is better sealed and matched.When the sewage draining exit of ball valve is opened, screw out puller bolt, on the shutoff end face of first tight bolt, seal ring is pressed on the second sealing disengagement formed in the second valve seat bench port, steel ball is under the thrust of fluid and two Action of Gravity Fields of top pressure spring, exit conical valve seat mouth, reach unlatching, sewage is discharged from the exhaust port of blowdown valve; Top pressure spring makes to coordinate with conical valve seat mouth closely in situation at guarantee steel ball, is reliably thrown off, complete the unlatching of sewage draining exit, reach the reliable of open operation by energy Reliable guarantee steel ball and conical valve seat mouth.

In this specific embodiment, described ball valve body 1 includes the valve body 15 with fluid outlet passage 13 and part valve pocket, and enter flange base 16 with the fluid of fluid entering channel 12 and part valve pocket, the main body 111 of valve pocket 11 is positioned at described valve body 15, enter on flange base 16 at fluid and there is spherical crown shape valve pocket local 112, fluid enters flange base 16 one end and is provided with mounting flange 161, valve body 15 is positioned at valve pocket and is provided with the flange plate 151 entering mounting flange 161 on flange base 16 with fluid and coordinate away from one end of fluid outlet spout 13, described fluid enters flange base 16 and is assemblied on the flange plate 151 of valve body 15 through mounting flange 161, fluid enters in flange base 16 and is provided with 112 joints, spherical crown shape valve pocket local the ball seat installation step assembled for valve seat 2.Valve body structure is reasonable in design, namely facilitates being processed to form of valve body, facilitates being assemblied in valve pocket of valve seat and globe disk simultaneously.

Above-described embodiment, only for illustration of the use of the utility model, is not the restriction to the utility model protection domain, and all equivalent distortion and modification technological scheme all fall in protection category of the present utility model.

Claims (5)

1. a sewage draining exit opens and closes the reliable pneumatic ball valve of operation, comprise the ball valve body with valve pocket, ball valve body is provided with the fluid entering channel be communicated with valve pocket, fluid outlet passage, valve seat is provided with in valve pocket, and the globe disk to coordinate with valve base sealing, globe disk is provided with fluid through-hole, moving through supporting shaft bottom globe disk fits over bottom ball valve body, globe disk top is connected with valve rod, valve rod passes valve body relative to the other end being connected one end with globe disk and is connected with pneumatic actuator, be sealed and matched through valve rod sealing device between described valve rod and valve body, sewage draining exit is typically provided with bottom ball valve body, sewage draining exit place is provided with blowdown valve, blowdown valve includes cylindric blowdown valve valve body, spinning sewage draining exit place on ball valve body, blowdown valve valve body one end, the other end of blowdown valve valve body has screwed puller bolt, blowdown valve body wall has exhaust port, conical valve seat mouth is provided with in blowdown valve valve body, puller bolt abuts steel ball, steel ball coordinates with conical valve seat mouth, it is characterized in that: be positioned at valve seat mouth in described blowdown valve valve body and be provided with step hole slot away from steel ball one end, top pressure spring steel ball being pushed away valve seat mouth is provided with in described step hole slot, described top pressure spring one end is pressed on step hole groove bottom, the top pressure spring the other end is pressed on steel ball, described steel ball is conflicted in puller bolt end through top pressure spring.

2. sewage draining exit opens and closes the reliable pneumatic ball valve of operation according to claim 1, it is characterized in that: be positioned at conical valve seat mouth in described blowdown valve valve body and be axially provided with the second valve seat bench port towards exhaust port one end, second valve seat bench port is between conical valve seat mouth and exhaust port, described puller bolt coordinates end, one end to be provided with shutoff end face with steel ball, the shutoff end face of described puller bolt and the second valve seat bench port are conflicted and are sealed and matched, and the shutoff end face of puller bolt is provided with the seal ring realizing shutoff end face and the second valve seat bench port and be sealed and matched.

3. sewage draining exit opens and closes the reliable pneumatic ball valve of operation according to claim 2, it is characterized in that: described puller bolt and steel ball counterface offer the spring eye along puller bolt axis, Compress Spring and push plate is provided with in spring eye, Compress Spring one end is bearing in bottom spring eye, the Compress Spring the other end is pressed in push plate, spacing being assemblied in spring eye of described push plate also can slide axially along spring eye, described steel ball is connected in push plate, the oral area of described spring eye and steel-ball limiting form described puller bolt top pressing steel balls and are engaged in conical valve seat mouth.

4. sewage draining exit opens and closes the reliable pneumatic ball valve of operation according to claim 3, it is characterized in that: the oral area of described spring eye is the spherical enlarging with steel ball gabarit adaptation.

5. according to claim 1 or 2 or 3 or 4, sewage draining exit opens and closes the reliable pneumatic ball valve of operation, it is characterized in that: described ball valve body includes the valve body with fluid outlet passage and part valve pocket, and enter flange base with the fluid of fluid entering channel and part valve pocket, the main body of valve pocket is positioned at described valve body, enter on flange base at fluid and there is spherical crown shape valve pocket local, fluid enters flange base one end and is provided with mounting flange, valve body is positioned at valve pocket and is provided with away from one end of fluid outlet spout and enters with fluid the flange plate that on flange base, mounting flange coordinates, described fluid enters flange base and is assemblied on the flange plate of valve body through mounting flange, fluid enters in flange base and is provided with joint, spherical crown shape valve pocket local the ball seat installation step assembled for valve seat.