CN2426550Y

CN2426550Y - Auto-control valve for deep well pump

Info

Publication number: CN2426550Y
Application number: CN 00209135
Authority: CN
Inventors: 刘庆
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-04-13
Filing date: 2000-04-13
Publication date: 2001-04-11
Anticipated expiration: 2010-04-13

Abstract

The utility model relates to an automatic control valve for deep well pumps. The utility model can effectively eliminate liquid impact and realize automatic control, air exhaust and check. The utility model is composed of a valve body, a valve core, a first by-pass path component, a second by-pass path component and an automatic air exhaust device, wherein, the valve body comprises an upper valve cap body, a lower valve cap body and a main valve body, and the valve core comprises a lining board, a valve rod and a valve clack. An automatic control mechanism is composed of the first by-pass path component, the second by-pass path component, the automatic air exhaust device, an upper chamber and a lower chamber of a control chamber, and the valve core. Through the automatic control of the automatic control mechanism, when the deep well pump is opened, the utility model can realize automatic air exhaust, closing of the automatic control valve and slow opening. When the deep well pump is stopped, as the middle lower end of a valve shaft is provided with a plurality of grooves, the utility model realizes the linearity pressure discharge of backflow liquid, and effectively eliminates the liquid impact of the backflow liquid on the valve body.

Description

The deep-well pump internally piloted valve

The utility model relates to and a kind ofly is used for deep-well pump outlet and eliminates the deep-well pump internally piloted valve that liquid hits fully, particularly a kind ofly need not the deep-well pump internally piloted valve that outer power just can be realized automatic control, automatic vent and seal non-return.

Existing behaved known be used for deep-well pump outlet comprise a series of valves such as control valve, safety check, outlet valve, install complicated, automaticity is not high, during pump startup, need special manually carry out manual exhaust and operation, safety coefficient is not high, influences Security for liquid and automation degree for liquid.

The utility model is finished in order to solve the above problems, its objective is provides a kind of deep-well pump internally piloted valve, it is can not only eliminate repeatedly liquid to hit, and prevents the deep-well pump internally piloted valve of liquid return when realizing automatic control, the automatic vent behind the turn on pump and closing pump automatically.

In order to realize the purpose of this utility model, deep-well pump internally piloted valve of the present utility model: comprise valve body and spool, this valve body is by bonnet, bottom flange, main valve body, connecting bolt, clamping bolt, the 1st outer bypass parts, the 2nd outer bypass parts and automatic exhaust device constitute, its bonnet and bottom flange are by connecting between its periphery, and they are connected as one by connecting bolt, bottom flange and main valve body are by connecting between its periphery, and they are connected as one by clamping bolt, above-mentioned each joint is in sealing state, being recessed into and a formation pot shape of above-mentioned bonnet towards a side direction of the valve inside opposite side relative with it, when it is contained on the valve body, clipping diaphragm between the peripheral portion of its peripheral portion and bottom flange connects, bottom flange forms the pan shape, its opening is towards the concave side of bonnet, the central part of its bottom flange diapire is offered step through-hole, this hole is used for the stuffing box gland that chimeric spool matches with valve rod, above-mentioned main valve body has liquid entering hole, liquid outlet and upper opening, the distribution that meets at right angles of the axis of liquid entering hole and the axis of liquid outlet, the axis of upper opening and the angled distribution of the axis of liquid outlet, above-mentioned liquid entering hole, liquid outlet, intermediate openings is connected to each other, above-mentioned spool comprises: a pair of liner plate, diaphragm, stuffing box gland, valve rod, flap, the flap seat, nut, above-mentioned a pair of liner plate is speeded up diaphragm with therebetween form is fixed on the upper end portion of valve rod by nut, this diaphragm is divided into up and down two airtight control rooms with above-mentioned control room, valve rod stuffing box gland relatively passes the center hole of above-mentioned stuffing box gland with being free to slide, above-mentioned stuffing box gland is that sealing cooperates on every side with the valve rod that matches with it, thereby the controlling liquid in the above-mentioned control room down can not leaked from the sealing trepanning, there is a step at following middle part at valve rod, the lower end surface of step is covered with the upper-end surface of the peripheral wall that gradually closes the flap seat, and the center hole that gradually closes the flap seat is located in the middle and lower part of valve rod, and valve rod slides up and down relatively, the chimeric flap of fixing on the outer circumferential face that gradually closes the flap seat, the lower end surface of this flap is connected to by seal ring on the periphery upper-end surface of flap seat, and this flap seat is by on the chimeric intermediate openings inner peripheral surface that is fixed in main valve body of its outer circumferential face, and the valve rod central direction of flap seat relatively moves freely, be provided with the groove of multiple tracks elongate in shape until the bottom in the bottom of valve rod, guarantee the linear distribution of pressure release of withdrawing fluid, be connected bypass parts outside the 1st between bonnet and main valve body, the 1st outer bypass parts are made of bypass tube and stop valve, intermediate portion at bypass tube is being provided with stop valve, the upper end of this bypass tube is connected with the last chamber in control room, and the lower end is connected with the export department of main valve body, is being connected the 2nd bypass parts between the import department of bottom flange and main valve body, the 2nd bypass parts are by bypass tube and stop valve, needle-valve, safety check constitutes, this bypass tube upper end is connected with the through hole that is located at bottom flange, thereby communicates with chamber under the control room, and the lower end is connected with through hole on being opened in main valve body import sidewall, thereby be connected with main valve body import department is inner, in the middle of bypass tube, be provided with stop valve, safety check, needle-valve, this needle-valve with in series be arranged on the bypass tube middle part with stop valve again after safety check is in parallel, connecting automatic control pressure vent at import department's sidewall of main valve body, this automatic exhaust device is by valve gap, main valve body, the ball float three-way valve, piston, ball lever, ball float, clamping bolt, suction tude, formations such as outlet pipe, above-mentioned valve gap and valve body be by connecting between its periphery, and by clamping bolt they are connected as a single entity, and joint is in sealing state, the center of above-mentioned valve gap has a through hole, the gas of discharging is the aperture mistake thus, and through hole has internal thread, and valve body is to be made of two adjacent cylindrical bodys that an end that varies in size seals, two cylindrical bodys are by communicating with dividing plate two through holes up and down that valve body is connected as a single entity, have a through hole in small column bottom centre, there is the internal thread of certain depth in through hole place toward the outer side, and the outside thread of suction tude forms tightness by this internal thread and valve body and cooperates, the gas that comes from pipe network passes through this hole through suction tude, discharge through outlet pipe, the outside thread of ball float three-way valve forms tightness with the internal thread of valve gap through hole and cooperates again, and the internal thread of outlet pipe cooperates with outside thread formation tightness outside three-way valve exposes valve body again, the three-way valve central opening is towards the right side, central opening is vertical with two other opening, and two opening axis overlap with the valve gap through-bore axis in addition, and the inwall of piston outer wall and threeway is gapped, guarantee that piston can freedom move up and down, the lower end of piston is tightness with the top of ball lever by welding and combines, and also is tightness by welding between ball float and the ball lever and combines the axis of ball float, the dead in line of the axis of ball lever and valve gap through hole, the assurance ball float is only done vertical motion, and does not swing.

The deep-well pump internally piloted valve of said structure of the present utility model is performed such work, when turn on pump, gas in the inlet tube enters automatic control pressure vent by pipeline, when treating that gas in the inlet tube is arranged almost, pressured fluid just enters outlet valve along the suction tude of outlet valve, ball float in the outlet valve constantly raises along with the rising of liquid, piston is motion vertically upward in three-way valve under the effect of ball float, after liquid level arrives height, exhaust port is withstood on the top of piston tightly, pressured fluid just enters diaphragm control chamber down along the 2nd bypass parts, thereby promoting liner plate drive valve rod moves upward gradually, so just valve rod is slowly mentioned, pressured fluid in the import simultaneously upwards pushes flap and slowly promotes, lock is slow opens thereby realized closing, when termination of pumping, because pumping the pressure of oral area reduces, flap is moving downward along valve rod under the effect of gravity, that has realized flap closes action slowly, after flap and flap seat closure, the pressured fluid of outlet side still can carry out pressure release by the multiple tracks groove of valve rod middle and lower part, in this process, because the liquid entering hole decompression of main valve, exist pressure difference before and after the big valve flap this moment, so withdrawing fluid enters chamber on the diaphragm control room by the 1st bypass parts, causes valve rod to move downward gradually, and within the predetermined time, the step at valve rod middle part and the upper-end surface closure of flap seat, the piston in the outlet valve be also owing to the import decompression, so directly move downward at self gravity sag, be returned to initial position, thereby realize the full-shut position of this valve.

Adopt above-mentioned deep-well pump internally piloted valve, can when hitting, realize liquid automatic control, automatic vent and sealing non-return eliminating effectively, and need not auxiliary electrical equipment and other medium and participate in, control unit is simple, rate of fault is extremely low, alleviates labor strength, saves the pump house construction cost, what is more important has guaranteed Security and automaticity for liquid, meets the general requirements of construction in the new period.

Below in conjunction with accompanying drawing embodiment of the present utility model is described.

Fig. 1 is the sectional drawing of the utility model full-shut position;

Fig. 2 is the sectional drawing of the utility model full-gear;

Fig. 3 closes the sectional drawing of state slowly for the utility model;

As shown in Figure 1, deep-well pump internally piloted valve of the present utility model comprises valve body and spool, valve body comprises bonnet 10, bottom flange 9, valve body 1, connecting bolt 8, clamping bolt 17, the 1st outer bypass parts, the 2nd outer bypass parts, venting gas appliance (being outlet valve), (wherein outlet valve comprises valve gap 23 again, outlet pipe 21, piston 25, connecting bolt 22, valve body 26, three-way valve 24, ball lever 27, ball float 28, suction tude 30, ball valve 29), this bonnet 10 forms the pot shape of downside to fovea superior, its circumferential end face connects with the periphery upper-end surface of bottom flange by clamping diaphragm 16, because this bottom flange 9 is the pan shape, its opening opening with bonnet up is relative, thereby last, form a cavity body between the bottom flange, it is the control room, because on above-mentioned, folder is being established diaphragm 16 between the following valve body, this diaphragm is separated into above-mentioned control room that under the chamber and control room the chamber on the control room, chimeric stuffing box gland 5 in the center hole of the bottom of bottom flange, sealing cover 5 is fixed on the bottom of valve body by a plurality of its flanges of screw crimping, be formed with a collar flange concentric on the lower end surface of bottom flange 9 with center hole, correspondingly the upper end portion with bottom flange 9 corresponding valve bodies 1 is formed with than the big step hole of body cavity bore dia, the upper end portion step hole tabling of the underpart collar flange of above-mentioned bottom flange 9 and above-mentioned valve body, and make it to want the cooperation place to seal, bonnet and bottom flange pass through a plurality of bolts along last, lower direction will be located in the hole on the peripheral outer lips and screw, and then will screw to a plurality of corresponding apertures upward under a plurality of bolts 17 edges a plurality of holes on the mider hole peripheral outer lips of valve body 1 and bottom flange bottom, so just with bonnet 10, diaphragm 16, bottom flange 9, valve body 1 is connected as a single entity, above-mentioned main valve body forms the threeway form, the distribution that meets at right angles of the axis of its liquid entering hole and liquid outlet, the axis at its middle part and the dead in line of liquid entering hole.Above-mentioned spool is by liner plate 11, nut 14, valve rod 13, flap 4, flap seat 2 constitutes, wearing liner plate 11 and diaphragm 16 in the upper end portion of valve rod, liner plate 11 has two up and down, up and down between two liner plates 11 folder establish fixing diaphragm 16, the lower end surface of following liner plate 11 is located on the shaft shoulder of valve rod, to go up by screwing the nut 14 on the upper-end surface that is pressed in liner plate 11, following liner plate 11 and diaphragm 16 are fixed on the valve rod 13, along with liner plate 11 is promoted up and down, and valve rod 13 is moved up and down, this valve rod 13 passes in the endoporus of stuffing box gland 5, and valve rod 13 can be free to slide in this hole.There is the step of a projection at valve rod 13 middle parts, gradually close in the flap seat 3 chimeric center holes that are fixed on the flap 4, can be with flap 4 along on the valve rod 13, following motion, on the upper periphery of gradually closing flap seat 3, be provided with the outstanding bead of radius vector foreign side, the upper-end surface of this flange and the lower end surface of the step on the valve rod connect, this diameter that gradually closes the hole that flap seat 3 matches with valve rod 13 is greater than the diameter of the valve rod 13 of cooperation place with it, so flap 4 can move up and down along valve rod for one with gradually closing flap seat 3, the lower end surface of flap 4 connects in the upper-end surface of closing under the valve state with flap seat 2 by the cyclic sealing gasket that is embedded in the circular groove on this end face, thereby center hole sealing with flap seat 2, the upper-end surface of flap seat 2 is horizontal, the central direction easy on and off that valve rod 13 passes flap seat 2 slides, on export department's sidewall of main valve body 1, be provided with through hole, this through hole is connected with the lower end of bypass tube 6, the through hole that is located on the wall of bonnet 10 is connected with the upper end of bypass tube 6, thereby this bypass tube 6 is connected with chamber on the control room, intermediate portion at bypass tube 6 is provided with stop valve 7, this bypass tube 6, stop valve 7 constitutes the 1st bypass parts, the through hole that is located on import department's sidewall of main valve body 1 has two, one of them is connected with the lower end of bypass tube 31, thereby bypass tube 31 is connected with the import department inside of valve body 1, the through hole that is located on the sidewall of bottom flange 9 is connected with the upper end of bypass tube 31, thereby bypass tube 31 is connected with the control room, intermediate portion at bypass tube 31 is provided with stop valve 20, needle-valve 19 and safety check 18, needle-valve 19 is by being located on the branch road and in parallel with safety check, safety check 18 in series is located on the bypass tube 31 with stop valve 20 with needle-valve 19 backs in parallel, this bypass tube 31, needle-valve 19, safety check 18, stop valve 20 has constituted the 2nd bypass parts, the another one through hole that is located on import department's sidewall of main valve body 1 is connected with automatic control pressure vent suction tude 30, thereby suction tude 30 is connected with the import department inside of valve body 1, outlet valve valve gap 23 and valve body 26 are by connecting between its periphery and by clamping bolt they being connected as a single entity, joint is in sealing state, the middle part of above-mentioned valve gap has a through hole, the outer rim of the outlet pipe 21 of the through hole top inner edge in hole therewith forms the tightness cooperation by outside thread with combining of internal thread, one end of the three-way valve 24 of through hole below through hole therewith is that outside thread cooperates with the tightness that internal thread forms, the central opening of three-way valve 24 is towards the right side, opening towards the right side is the import of air, two other opening is positioned at same straight line, dead in line with valve gap 23 via openings, the outer wall and the three-way valve inwall of the piston 25 of the inside of three-way valve 24 have certain interval, guarantee that piston 25 can freedom vertical motion up and down, an end of ball lever 27 cooperates by welding the formation tightness with an end of ball float 28.

The chamber directly communicates with the main valve liquid outlet in Fig. 1 because on the diaphragm control room, so when the air of main valve import drains, piston 25 in the outlet valve withstands relief opening, when deep-well pump goes out hydraulic coupling and overcomes ductwork pressure, flap 4 is slowly opened, its process is: the gas in main valve 1 import is through suction tude 30, ball valve 29, three-way valve 24, outlet pipe 21 is discharged, after liquid rises to height in the outlet valve, ball float 28 holds up piston 25 and moves upward, until blocking relief opening fully, like this, pressured fluid is by stop valve 20, needle-valve 19, drain into the valve gap cavity of resorption, in this process, two blocks of liner plates 11 are together with diaphragm 16, valve rod 13, flap 4 slowly upwards opens to Fig. 2 state, piston also moves to Fig. 2 state, realizes that the slow of this valve open, and beginning to pipe network for liquid.

In Fig. 3, when being the termination of pumping state, because main valve liquid entering hole decompression, flap falls under self-gravity action, prop up the flap seat, then along with the rising of withdrawing fluid pressure, pressured fluid continues earial drainage along valve rod gas pressure relief slot that is provided with and the gap of gradually closing the flap seat, withdrawing fluid is by bypass tube 6, stop valve 7 enters chamber on the diaphragm control room, the liquid of following chamber is then along bypass tube 30, safety check 18, stop valve 20 enters the main valve liquid entering hole, make liner plate 11, drive diaphragm 16, valve rod 13 and flap 4 move downward, and realize closing slowly last to full-shut position, at this moment, return pressure is translation progressively, liquid in the outlet valve enters the import of main valve, piston 25 through suction tude 29, ball float 28 is got back to Fig. 1 state, after termination of pumping, deep-well pump to the liquid of control valve direction slowly falls after rise along duct orientation, withdrawing fluid slowly sucks by outlet valve, until emptying, causes the water pump counter-rotating and be unlikely.

Claims

1, deep-well pump internally piloted valve: comprise valve body and spool, it is characterized in that: this valve body is by bonnet, bottom flange, main valve body, connecting bolt, clamping bolt, the 1st outer bypass parts, the 2nd outer bypass parts and automatic exhaust device constitute, its bonnet and bottom flange are by connecting between its periphery, and they are connected as one by connecting bolt, bottom flange and main valve body are by connecting between its periphery, and they are connected as one by clamping bolt, above-mentioned each joint is in sealing state, being recessed into and a formation pot shape of above-mentioned bonnet towards a side direction of the valve inside opposite side relative with it, when it is contained on the valve body, clipping diaphragm between the peripheral portion of its peripheral portion and bottom flange connects, bottom flange forms the pan shape, its opening is towards the concave side of bonnet, the central part of its bottom flange diapire is offered step through-hole, and this hole is used for the stuffing box gland that chimeric spool matches with valve rod.Above-mentioned main valve body has liquid entering hole, liquid outlet and upper opening, the distribution that meets at right angles of the axis of liquid entering hole and the axis of liquid outlet, the axis of upper opening and the angled distribution of the axis of liquid outlet, above-mentioned liquid entering hole, liquid outlet, upper opening is connected to each other, above-mentioned spool comprises: a pair of liner plate, diaphragm, stuffing box gland, valve rod, flap, the flap seat, nut, above-mentioned a pair of liner plate is speeded up diaphragm with therebetween form is fixed on the upper end portion of valve rod by nut, this diaphragm is divided into up and down two airtight control rooms with above-mentioned control room, valve rod stuffing box gland relatively passes the center hole of above-mentioned stuffing box gland with being free to slide, above-mentioned stuffing box gland is that sealing cooperates on every side with the valve rod that matches with it, thereby the controlling liquid in the above-mentioned control room down can not leaked from the sealing trepanning, there is a step at following middle part at valve rod, the lower end surface of step is covered with the upper-end surface of the peripheral wall that gradually closes the flap seat, gradually close the flap seat is located in valve rod by its center hole middle and lower part, valve rod slides up and down relatively, the chimeric flap of fixing on the outer circumferential face that gradually closes the flap seat, the lower end surface of this flap is connected on the periphery upper-end surface of flap seat by seal ring, this flap seat is by on the chimeric intermediate openings inner peripheral surface that is fixed in main valve body of its outer circumferential face, the valve rod central direction of flap seat relatively moves freely, be provided with the groove of multiple tracks elongate in shape in the middle and lower part of valve rod, guarantee the linear distribution of pressure release of withdrawing fluid, between bonnet and main valve body, be connected bypass parts outside the 1st, the 1st outer bypass parts are made of bypass tube and stop valve, intermediate portion at bypass tube is being provided with stop valve, the upper end of this bypass tube is connected with the last chamber in control room, the lower end is connected with the export department of main valve body, between the import department of bottom flange and main valve body, be connected the 2nd bypass parts, the 2nd bypass parts are by bypass tube and stop valve, needle-valve, safety check constitutes, this bypass tube upper end is connected with the through hole that is located at bottom flange, thereby communicate with chamber under the control room, the lower end is connected with through hole on being opened in main valve body import sidewall, thereby be connected with main valve body import department is inner, in the middle of bypass tube, be provided with stop valve, safety check, needle-valve, this needle-valve with in series be arranged on the bypass tube middle part with stop valve again after safety check is in parallel, import department's sidewall at main valve body is connecting automatic control pressure vent, this automatic exhaust device is by valve gap, main valve body, the ball float three-way valve, piston, ball lever, ball float, clamping bolt, suction tude, formations such as outlet pipe, above-mentioned valve gap and valve body are by connecting between its periphery, and they are connected as a single entity by clamping bolt, joint is in sealing state, the center of above-mentioned valve gap has a through hole, the gas of discharging is the aperture mistake thus, through hole has internal thread, valve body is to be made of two adjacent cylindrical bodys that an end that varies in size seals, two cylindrical bodys are by communicating with dividing plate two through holes up and down that valve body is connected as a single entity, have a through hole in small column bottom centre, there is internal thread in through hole place toward the outer side, the outside thread of suction tude forms tightness by this internal thread and valve body and cooperates, the gas that comes from pipe network passes through this hole through suction tude, discharge through outlet pipe again, the outside thread of ball float threeway forms tightness with the internal thread of valve gap through hole and cooperates, the internal thread of outlet pipe forms tightness with outside thread that the valve body outside is exposed in threeway again and cooperates, the three-way valve central opening is towards the right side, central opening is vertical with two other opening, two opening axis overlap with the valve gap through-bore axis in addition, the inwall of piston outer wall and threeway has certain clearance, guarantee that piston can freedom move up and down, the lower end of piston is tightness with the top of ball lever by welding and combines, also being tightness by welding between ball float and the ball lever combines, the axis of ball float, the dead in line of the axis of ball lever and valve gap through hole, the assurance ball float is only done vertical motion, and does not swing.