CN212360896U - Control valve integrated block for diaphragm pump - Google Patents

Abstract

The utility model discloses a control valve integrated block for a diaphragm pump, which aims to solve the technical problems that the prior control valve is dispersedly arranged on a plunger cavity, so that various mounting holes are required to be processed on the plunger cavity, the processing period and the cost of the plunger cavity are increased, and each control valve works independently without matching with each other, so that the function of the control valve is relatively single, the utility model integrates an exhaust oil supplementing valve, a pressure interval exhaust valve, a safety valve, a liquid discharge device, an oil discharge part and an exhaust one-way valve on an oil supplementing disc, does not need to process various mounting holes on the plunger cavity, reduces the processing period and the cost of the plunger cavity, ensures the sealing property of the plunger cavity, and the exhaust oil supplementing valve, the pressure interval exhaust valve, the safety valve, the liquid discharge device, the oil discharge part and the exhaust one-way valve are matched with each other, the function of the device is more outstanding, the whole structure is compact, the occupied space is small, and the maintenance is convenient.

Description

Control valve integrated block for diaphragm pump

Technical Field

The utility model relates to a diaphragm pump, concretely relates to control valve integrated package for diaphragm pump.

Background

The diaphragm pump is used as a main device for material conveying, and has wide application in the industries of chemical industry, mineral products and the like. The diaphragm is an important part of the diaphragm pump, and one side of the diaphragm is a hydraulic oil cavity, and the other side of the diaphragm is a medium cavity. The diaphragm pump drives the diaphragm to move towards the front end or the rear end through the reciprocating motion of the plunger on the side of the hydraulic oil cavity, so that reciprocating liquid inlet and liquid discharge are realized, and medium conveying is realized.

The hydraulic oil chamber of plunger reciprocating motion need install discharge valve, the relief valve, various control valves such as drain valve usually, the safe user state that can guarantee hydraulic oil is used in each control valve cooperation, current diaphragm pump is installed each control valve respectively on the plunger cavity respectively usually, the dispersion is in different positions, consequently, need process various mounting holes on the plunger cavity, the processing cycle and the cost expense of plunger cavity have been increased, and each control valve only works alone, do not have the cooperation each other, make the function of each control valve comparatively single.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving the diaphragm pump that exists among the prior art and install the control valve dispersion on the plunger cavity, lead to needing to process various mounting holes on the plunger cavity, increased the processing cycle and the cost of plunger cavity, each control valve only the autonomous working moreover, do not have the cooperation each other for the comparatively single technical problem of function of each control valve, and provide a diaphragm pump is with control valve integrated package.

In order to achieve the above purpose, the utility model adopts the technical scheme that:

a control valve manifold block for a diaphragm pump is characterized in that: the device comprises an oil supplementing disc, an exhaust oil supplementing valve, a pressure interval exhaust valve and two safety valves, wherein the exhaust oil supplementing valve and the pressure interval exhaust valve are arranged above the oil supplementing disc; the liquid drainage device, the oil discharge part and the exhaust one-way valve are arranged on the side surface of the oil supplementing disc;

the oil supplementing disc is arranged on a plunger cavity of the diaphragm pump, a first oil passing hole communicated with the inside of the plunger cavity is axially arranged on the oil supplementing disc, a first through hole, a second through hole, a third through hole and a fourth through hole are radially arranged on the oil supplementing disc, one end of each through hole is communicated with the outside, the other end of each through hole is communicated with the first oil passing hole, and an L-shaped through hole is further arranged at the edge of the oil supplementing disc;

the L-shaped through hole comprises a transverse hole and a vertical hole which are communicated with each other, the transverse hole is communicated with the outside of the side surface of the oil supplementing disc, and the vertical hole is communicated with the outside above the oil supplementing disc;

the exhaust oil supplementing valve is arranged above the first oil passing hole;

the working end of the exhaust valve in the pressure interval corresponds to the first through hole;

the working end of the liquid discharge device corresponds to the second through hole;

the working ends of the two safety valves respectively correspond to the third through hole and the fourth through hole, and the outer ports of the third through hole and the fourth through hole are sealed.

The oil discharge part is arranged at the outer end of the transverse hole;

a maintenance hole communicated with the fourth through hole is arranged above the fourth through hole between the safety valve and the exhaust oil supplementing valve, and a plug is arranged in the maintenance hole;

the inlet end of the exhaust one-way valve extends into a diaphragm cavity of the diaphragm pump, and the outlet end of the exhaust one-way valve is communicated with the first through hole through a connecting pipe.

Further, the pressure interval exhaust valve comprises a compression nut, a sealing valve core, a connecting valve seat and a restoring spring;

the connecting valve seat is of a sleeve structure, a first flow passage, a second flow passage and a third flow passage which are sequentially communicated are arranged in the connecting valve seat, and a conical flow passage is arranged between the second flow passage and the third flow passage;

the compression nut is arranged in the first flow passage, and a first exhaust hole communicated with the second flow passage is formed in the compression nut;

the sealing valve core is arranged in the second flow channel and is in clearance fit with the second flow channel, and the top surface of the sealing valve core is contacted with the bottom surface of the compression nut, so that the fluid between the first exhaust hole and the second flow channel is blocked, and the sealing valve core is closed;

the bottom surface of the sealing valve core is provided with a conical surface, and the conical surface is matched with a conical flow passage connected with the valve seat;

a spring installation groove is formed in the sealed valve core, the recovery spring is installed in the spring installation groove, the bottom end of the recovery spring abuts against the bottom surface of the spring installation groove, and the top end of the recovery spring abuts against the bottom surface of the compression nut and is used for providing the recovery force for opening the sealed valve core;

the connecting valve seat is installed on the oil supplementing disc, and the third flow channel is communicated with the diaphragm cavity through the first through hole formed in the oil supplementing disc, so that exhaust of the diaphragm cavity is achieved.

Furthermore, a spring positioning groove is formed in the bottom surface of the compression nut, and the top end of the recovery spring is arranged in the spring positioning groove, so that the recovery spring stably works;

the compression nut is a T-shaped nut and comprises a head part and a sealing section, the head part is arranged at the top of the connecting valve seat, and the sealing section is arranged in the first flow channel.

Furthermore, the exhaust oil supplementing valve comprises a valve seat connecting flange, a lower valve seat, an upper valve seat, a positioning ring pressing plate, a lower positioning ring, a driven blocking ball, a driving blocking ball, a spring seat, an exhaust spring and an oil supplementing spring;

the valve seat connecting flange is arranged on the oil supplementing disc, and an oil supplementing hole communicated with the first oil passing hole is formed in the valve seat connecting flange;

the lower valve seat is arranged above the valve seat connecting flange, and a fourth flow channel communicated with the oil supplementing hole is arranged in the lower valve seat;

the upper valve seat is arranged above the lower valve seat, a fifth flow passage communicated with the fourth flow passage is arranged in the upper valve seat, and meanwhile, a second exhaust hole for exhausting is formed in the upper valve seat;

the positioning ring pressing plate is arranged above the upper valve seat, and a second oil passing hole communicated with the fifth flow passage is formed in the positioning ring pressing plate;

the lower positioning ring is arranged in the fourth flow passage, an inner cavity of the lower positioning ring is communicated with the oil supplementing hole and the fourth flow passage, and meanwhile, an air passing hole communicated with the oil supplementing hole and the fourth flow passage is formed in the ring wall of the lower positioning ring; the driven blocking ball is arranged above the lower positioning ring and used for realizing medium blocking of the fourth flow passage and the oil supplementing hole; the active blocking ball is positioned in the fifth flow passage and is used for realizing medium blocking of the fifth flow passage and the second oil passing hole;

the oil supplementing spring, the spring seat and the exhaust spring are sequentially arranged in the fourth flow channel and/or the fifth flow channel, the top end of the oil supplementing spring is abutted against the active blocking ball, the bottom end of the oil supplementing spring is installed on the spring seat and used for providing closing acting force for the active blocking ball, the top end of the exhaust spring is installed on the spring seat, and the bottom end of the exhaust spring is abutted against the driven blocking ball and used for providing closing acting force for the driven blocking ball.

Furthermore, an exhaust screw is arranged in a second exhaust hole in the upper valve seat, and the exhaust screw is installed in the second exhaust hole in a clearance mode.

Further, the spring seat comprises a radial connecting plate and an axial sleeve, the radial connecting plate is fixedly arranged in the middle of the outer wall of the axial sleeve, and the end of the radial connecting plate is embedded into a groove of the fourth flow channel or the fifth flow channel.

Furthermore, a fifth through hole which is axially communicated is formed in the radial connecting plate;

an upper positioning ring is arranged in the fifth flow passage, and an inner ring cavity of the upper positioning ring communicates the second oil passing hole with the fifth flow passage; the active blocking ball is positioned below the upper positioning ring.

Further, the valve seat connecting flange is provided with a mounting hole and is connected with the oil supplementing disc through the mounting hole.

Further, the drainage device comprises a manual drainage valve and a one-way overflow device;

the manual drain valve comprises a drain valve seat, a drain valve core, a valve sleeve, a sealing device and a locking nut;

the liquid discharge valve seat is arranged on the oil supplementing disc, a flow passage cavity is arranged in the liquid discharge valve seat, an inlet of the flow passage cavity is communicated with the second through hole, and an outlet of the flow passage cavity is communicated with the one-way flow passage device; one end of the liquid drainage valve core is arranged in an inlet of the overflowing cavity and used for blocking overflowing media, the other end of the liquid drainage valve core penetrates through the valve sleeve and extends out of the valve sleeve, the valve sleeve is fixedly connected with the liquid drainage valve seat, the front end of the valve sleeve is in threaded connection with the liquid drainage valve core, the tail end of the valve sleeve is provided with an annular cavity, the sealing device is sleeved on the liquid drainage valve core and is positioned in the annular cavity, and the locking nut is fixedly connected with the valve sleeve and used for axially positioning and installing the sealing device;

the one-way overflow device comprises a one-way overflow channel, a baffle and a valve ball, wherein the one-way overflow channel is a conical cavity and is arranged on the oil supplementing disc and communicated with the overflow cavity of the manual liquid discharge valve, and the valve ball is arranged in the conical cavity and used for blocking a medium of the one-way overflow channel; the baffle is arranged on the oil supplementing disc and is positioned at the outlet end of the one-way flow passage and used for preventing the valve ball from entering the oil storage tank of the diaphragm pump along with the medium.

Furthermore, the matching surface of the liquid discharge valve core and the liquid discharge valve seat is a conical surface;

the front end of the drainage valve core sealing conical surface is arranged into a spherical crown cylindrical surface;

the sealing device is a mechanical seal or a packing seal;

the packing seal comprises hard packing and soft packing, the hard packing is arranged between the soft packing, the left side of the packing seal is provided with a packing top plate, and the right end of the packing seal is compressed by a packing compression ring.

The utility model has the advantages that:

1. the utility model discloses mend the oil valve with exhausting, the interval discharge valve of pressure, the relief valve, drain, arrange that oil part and exhaust check valve are whole integrated on mending the food tray, no longer need for processing various mounting holes on the plunger cavity, the processing cycle and the cost expense of plunger cavity have been reduced, and the leakproofness of plunger cavity has been guaranteed, the oil valve is mended in exhausting, the interval discharge valve of pressure, the relief valve, drain, arrange oil part and exhaust check valve and cooperate each other, make its effect more outstanding, overall structure is compact, occupation space is little, and convenient maintenance.

2. The utility model provides a pressure interval discharge valve installs on mending the food tray, can discharge the gas that mixes in the fluid rapidly to avoid the diaphragm pump to produce gaseous phenomenon of gathering, and then avoided equipment vibrations, diaphragm to damage, conveying efficiency reduces and the transport pressure is disorderly the scheduling problem, provides the assurance to the steady job of diaphragm pump, makes diaphragm pump working property be in the optimum, has improved its operational reliability.

3. The utility model provides a pressure interval discharge valve can exhaust the operation in setting for the pressure range for exhaust operation is controllable.

4. The utility model provides an oil valve is mended in exhaust can realize automatic exhaust function and automatic oil function of meneing, has not only avoided setting up single discharge valve and the costly problem of oil valve of mending, has still practiced thrift the installation space of diaphragm pump.

5. The utility model provides an automatic oil supplementation of diaphragm pump can be realized to the oil valve is mended in the exhaust for the oil mass in the diaphragm pump hydraulic pressure intracavity is invariable basically, guarantees the normal work of diaphragm pump, has improved its operational reliability.

6. The utility model provides an exhaust oil supplementing valve installs on mending the food tray, can discharge rapidly the gas in the diaphragm pump cavity, further avoids the diaphragm pump to produce gaseous phenomenon of gathering, and has further avoided equipment vibrations, diaphragm damage, conveying efficiency to reduce and the transport pressure is disorderly scheduling problem for diaphragm pump working property is in the optimum, has improved its operational reliability.

7. The utility model provides a drain has realized the meticulous fine setting of flowing back flow, has finally realized the best working solution volume in plunger chamber, and diaphragm pump working property is in optimum, and the reliability is high.

8. The utility model provides a flowing back device uses one-way overflow arrangement to prevent that the working solution in the oil storage tank from flowing back and going into the plunger chamber, keeps plunger chamber working solution volume for optimum liquid volume, and diaphragm pump working property keeps at the optimum, and the high reliability can keep.

9. The utility model provides a drain adopts the packing to seal, and the packing clamping ring compresses tightly the packing and seals, and the packing is sealed compressed, produces and warp, and the valve barrel hole is hugged closely to the excircle, and the hole holds the pole portion of flowing back case tightly, forms effective, reliable sealed, can satisfy the dynamic seal and the quiet sealed requirement of flowing back case pole portion simultaneously, and relative O shape circle, bearing seal etc. seal, and the packing has higher reliability.

Drawings

Fig. 1 is a schematic structural diagram of a control valve manifold block for a diaphragm pump according to the present invention;

FIG. 2 is a cross-sectional view F-F of FIG. 1;

FIG. 3 is a sectional view taken along line G-G of FIG. 1;

FIG. 4 is a schematic structural view of the middle pressure section exhaust valve of the present invention;

FIG. 5 is a schematic structural view of a connecting valve seat according to the present invention;

fig. 6 is a schematic structural view of the compression nut of the present invention;

fig. 7 is a schematic structural diagram of the middle sealing valve core of the present invention;

FIG. 8 is a first schematic structural view of the middle exhaust oil replenishing valve of the present invention;

FIG. 9 is a schematic structural diagram of a middle exhaust oil replenishing valve of the present invention;

FIG. 10 is a top view of FIG. 8;

FIG. 11 is a schematic structural view of a spring seat of the present invention;

fig. 12 is a schematic structural view of the drainage device of the present invention.

Reference numerals:

1-an oil supplementing disc, 11-a plunger cavity, 12-a first oil passing hole, 13-a first through hole, 14-a second through hole, 15-a third through hole, 16-a fourth through hole and 17-an L-shaped through hole;

2-exhaust oil supplementing valve, 21-valve seat connecting flange, 22-lower valve seat, 23-upper valve seat, 24-positioning ring pressing plate, 25-lower positioning ring, 26-driven blocking ball, 27-driving blocking ball, 28-spring seat, 29-exhaust spring, 210-oil supplementing spring, 211-upper positioning ring, 212-exhaust screw, 213-connecting rod, 214-mounting hole, 215-oil supplementing hole, 216-fourth flow channel, 217-fifth flow channel, 218-second exhaust hole, 219-second oil passing hole, 220-air passing hole, 221-radial connecting plate, 222-axial sleeve, 223-fifth through hole, 224-first sealing ring, 225-second sealing ring and 226-third sealing ring;

3-a pressure interval exhaust valve, 31-a compression nut, 32-a sealing valve core, 33-a connecting valve seat, 34-a recovery spring, 35-a sealing ring, 36-a first sealing gasket, 311-a first exhaust hole, 312-a spring positioning groove, 313-a head, 314-a sealing section, 321-a conical surface, 322-a spring mounting groove, 331-a first flow channel, 332-a second flow channel, 333-a third flow channel and 334-a conical flow channel;

4-safety valve;

5-a drainage device, 51-a drainage valve seat, 52-a drainage valve core, 53-a valve sleeve, 54-a sealing device, 55-a locking nut, 56-a one-way overflow channel, 57-a baffle, 58-a valve ball, 59-a packing top plate, 510-a packing press ring, 511-a second sealing gasket, 512-a hard sealing packing, 513-a soft sealing packing, 514-a hand wheel, 515-a nut, 516-a gasket, 517-O type sealing ring and 519-an oil storage tank;

6-oil discharge part, 7-exhaust one-way valve and 8-plug;

9-diaphragm chamber, 91-connecting tube;

Detailed Description

To make the objects, advantages and features of the present invention clearer, the following detailed description of the control valve integrated block for diaphragm pump provided by the present invention is made with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following detailed description. It should be noted that: the drawings are in a very simplified form and are not to precise scale, and are provided solely for the purpose of facilitating and distinctly aiding in the description of the embodiments of the present invention; second, the structures shown in the drawings are often part of actual structures.

The utility model relates to a control valve integrated block for a diaphragm pump, which is shown by combining with figures 1 to 3, and comprises an oil supplementing disc 1, an exhaust oil supplementing valve 2 arranged above the oil supplementing disc 1, a pressure interval exhaust valve 3 and two safety valves 4; a liquid drainage device 5, an oil drainage part 6 and an exhaust one-way valve 7 which are arranged on the side surface of the oil supplementing disc 1;

the oil compensating disc 1 is arranged on a plunger cavity 11 of the diaphragm pump, a first oil passing hole 12 communicated with the inside of the plunger cavity 11 is axially arranged on the oil compensating disc, a first through hole 13, a second through hole 14, a third through hole 15 and a fourth through hole 16, one end of which is communicated with the outside and the other end of which is communicated with the first oil passing hole 12, are radially arranged on the oil compensating disc, and an L-shaped through hole 17 is also arranged at the edge of the oil compensating disc; the L-shaped through hole 17 comprises a transverse hole and a vertical hole which are communicated with each other, the transverse hole is communicated with the outside of the side surface of the oil supplementing disc 1, and the vertical hole is communicated with the outside above the oil supplementing disc 1;

the exhaust oil supplementing valve 2 is arranged above the first oil passing hole 12; the working end of the pressure interval exhaust valve 3 corresponds to the first through hole 13; the working end of the drainage device 5 corresponds to the second through hole 14; the working ends of the two safety valves 4 respectively correspond to a third through hole 15 and a fourth through hole 16, and the outer ports of the third through hole 15 and the fourth through hole 16 are sealed by plugs 8; the oil discharge part 6 is arranged at the outer end of the transverse hole; a maintenance hole communicated with the fourth through hole 16 is arranged above the fourth through hole 16 between the safety valve 4 and the exhaust oil supplementing valve 2, and a plug 8 is arranged in the maintenance hole; here, for checking whether the first through-hole 13 of the oil replenishment pan 1 is clogged; the inlet end of the exhaust one-way valve 7 extends into the diaphragm cavity 9 of the diaphragm pump, the outlet end is communicated with the first through hole 13 through a connecting pipe 91, and the connecting pipe 91 is preferably a seamless steel pipe.

From this, install each valve integration on moisturizing dish 1 for diaphragm pump overall structure is compact, has reduced the size of plunger cavity 11, and is convenient for install, be convenient for operation, be convenient for maintain. The liquid discharge device 5 is used at a low rotating speed in the stage of starting the equipment and is used for discharging a large amount of gas in the plunger cavity 11, and in the normal operation process of the equipment, the liquid discharge device 5 is closed. The exhaust check valve 7 is used for exhausting gas mixed with hydraulic oil in the diaphragm cavity 9, the exhausted oil mixed with the gas reaches a first through hole 13 in the oil supplementing disc 1 through the connecting pipe 91, the gas-liquid mixture is exhausted when the pressure reaches a specified value through the pressure interval exhaust valve 3, and the pressure interval exhaust valve 3 is closed when the pressure reaches a higher specified value. When the oil in the plunger cavity 11 is insufficient, the exhaust oil supplementing valve 2 supplements oil; the exhaust oil supplementing valve 2 realizes an exhaust function in the positive stroke process of the plunger and an oil supplementing function in the negative stroke process of the plunger. When the pressure of the plunger cavity 11 exceeds a specified value, the two safety valves 4 are opened to release the pressure, so that the purpose of protecting the system is achieved. The oil discharge part 6 is used for discharging the hydraulic oil in the oil storage tank during maintenance.

As shown in fig. 4 to 7, the pressure zone exhaust valve 3 includes a compression nut 31, a sealing valve element 32, a connecting valve seat 33, and a restoring spring 34. The connecting valve seat 33 is of a sleeve structure, a first flow passage 331, a second flow passage 332 and a third flow passage 333 which are sequentially communicated are arranged in the connecting valve seat, and a conical flow passage 334 is arranged between the second flow passage 332 and the third flow passage 333. The compression nut 31 is installed in the first flow passage 331, and a first exhaust hole 311 communicated with the second flow passage 332 is formed inside the compression nut; the seal spool 32 is disposed within the second flow passage 332 and is clearance fit with the second flow passage 332; the top surface of the sealing valve core 32 is in contact with the bottom surface of the compression nut 31 for sealing, so that the fluid between the first exhaust hole 311 and the second flow channel 332 is blocked, and the sealing valve core 32 is closed; the bottom surface of the sealing valve core 32 is provided with a conical surface 321, and the conical surface 321 is matched with a conical flow passage 334 of the connecting valve seat 33; the inside of sealing valve core 32 is provided with spring mounting groove 322, and recovery spring 34 installs in spring mounting groove 322, and simultaneously, the bottom of recovery spring 34 supports against with the tank bottom of spring mounting groove 322, and the top supports against with the bottom surface of gland nut 31 for provide the restoring force that sealing valve core 32 opened.

In the embodiment of the present invention, the compression nut 31 may specifically be a T-shaped nut, and includes a head 313 and a sealing section 314 connected to each other, the head 313 is disposed on the top of the connecting valve seat 33, and the sealing section 314 is disposed in the first flow passage 331. In order to ensure the tightness between the compression nut 31 and the connection valve seat 33, a sealing ring 35 is disposed on the contact surface between the head 313 of the compression nut 31 and the connection valve seat 33, so as to prevent the external environment from affecting the pressure section exhaust valve 3 and prevent the external water or dust from entering the pressure section exhaust valve 3. The sealing section 314 is provided with external threads, the first flow passage 331 of the connecting valve seat 33 is provided with internal threads, and the compression nut 31 and the connecting valve seat 33 are installed through matching of the external threads and the internal threads, so that the installation is very convenient. Meanwhile, molybdenum disulfide grease is coated on the threaded connection surfaces of the compression nut 31 and the connection valve seat 33 to prevent thread galling.

In order to make the operation of the restoring spring 34 more stable, the bottom surface of the pressing nut 31 is provided with a spring positioning groove 312, and the top end of the restoring spring 34 is arranged in the spring positioning groove 312, so that the restoring spring 34 is prevented from moving on the bottom surface of the pressing nut 31, and the restoring spring moves at a specified position.

When the pressure interval exhaust valve 3 is installed, the connection valve seat 33 is specifically installed on the oil compensation disc 1, and the third flow channel 333 is communicated with the outer hose cavity of the diaphragm pump through the first through hole 13 arranged on the oil compensation disc 1, so that the exhaust of the outer hose cavity of the diaphragm pump is realized. Specifically, the bottom of connecting valve seat 33 is provided with the external screw thread, is provided with the screw hole on the moisturizing dish 1, connects valve seat 33 and installs in the screw hole, realizes connecting valve seat 33 and moisturizing dish 1's installation. Meanwhile, the threaded connection surfaces connecting the valve seat 33 and the oil replenishment plate 1 are coated with molybdenum disulfide grease to prevent thread galling. In addition, a first sealing gasket 36 is arranged on the mounting surface of the connecting valve seat 33 and the oil supplementing disc 1, so that the threaded connection part is prevented from loosening, and meanwhile, outside water or dust is prevented from entering the pressure section exhaust valve 3.

When the pressure interval exhaust valve 3 works, pressure gas accumulated in the outer hose cavity of the diaphragm pump flows into the oil compensation disc 1, the pressure gas in the oil compensation disc 1 enters the third flow channel 333 through the first through hole 13, the pressure gas is gas with certain pressure at the moment, the pressure gas enters the second flow channel 332 through the third flow channel 333 and the conical flow channel 334, flows in a gap between the sealing valve core 32 and the connecting valve seat 33, enters a gap between the sealing valve core 32 and the compression nut 31, and is finally exhausted through the first exhaust hole 311 of the compression nut 31, so that the gas in the outer hose cavity of the diaphragm pump is exhausted. If the pressure of the pressure gas exceeds the set pressure, the pressure gas generates an acting force on the tapered surface 321 of the sealing valve core 32, and the sealing valve core 32 is lifted upwards under the acting force, so that the top surface of the sealing valve core 32 is in contact with the bottom surface of the compression nut 31 for sealing, the fluid between the first exhaust hole 311 and the second flow channel 332 is blocked, and the sealing valve core 32 is closed; when the pressure of the pressure gas is reduced to the set pressure, the top surface of the sealing valve core 32 is separated from the bottom surface of the compression nut 31 under the spring force of the restoring spring 34, a gap is generated, and the opening of the sealing valve core 32 is realized. Therefore, the exhaust valve for the pressure interval can realize exhaust in set pressure, and meanwhile, the opening and closing of the exhaust valve for the pressure interval are automatically completed without manual operation, so that the automation degree of the diaphragm pump is improved.

In practical application, the pressure interval exhaust valve 3 is designed according to the design requirement of the diaphragm pump, so that the pressure interval exhaust valve 3 realizes exhaust in a certain pressure interval, and the set pressure is related to the performance of the conical surface of the sealing valve core 32 and the restoring spring 34.

As shown in fig. 9 to 11, the exhaust oil compensation valve 2 includes a valve seat connecting flange 21, a lower valve seat 22, an upper valve seat 23, a positioning ring pressing plate 24, a lower positioning ring 25, an upper positioning ring 211, a driven blocking ball 26, a driving blocking ball 27, a spring seat 28, an exhaust spring 29, and an oil compensation spring 210.

The valve seat connecting flange 21 is arranged on the oil supplementing disc 1, and an oil supplementing hole 215 is formed in the valve seat connecting flange; the lower valve seat 22 is arranged above the valve seat connecting flange 21, and a fourth flow passage 216 communicated with the oil supplementing hole 215 is arranged in the lower valve seat 22; the upper valve seat 23 is arranged above the lower valve seat 22, a fifth flow passage 217 communicated with the fourth flow passage 216 is arranged in the upper valve seat 23, meanwhile, a second exhaust hole 218 for exhausting is arranged on the upper valve seat 23, an exhaust screw 212 is arranged in the second exhaust hole 218, the exhaust screw 212 is installed in the exhaust hole 218 in a clearance mode, the exhaust screw 212 enables air in the fifth flow passage 217 to slowly flow out of the fifth flow passage 217, and meanwhile, outside water or dust is prevented from entering the fifth flow passage 217. The positioning ring pressing plate 24 is disposed above the upper valve seat 23, and a second oil passing hole 219 communicated with the fifth flow passage 217 is disposed therein.

The lower positioning ring 25 is arranged in the fourth flow passage 216, the oil supplementing hole 215 is communicated with the fourth flow passage 216 through a ring cavity in the lower positioning ring 25, and meanwhile, an air passing hole 220 for communicating the oil supplementing hole 215 with the fourth flow passage 216 is formed in the ring wall of the lower positioning ring 25; the driven blocking ball 26 is arranged above the lower positioning ring 25 and is used for realizing medium blocking of the fourth flow passage 216 and the oil supplementing hole 215; the upper positioning ring 211 is arranged in the fifth flow passage 217, and a ring cavity inside the upper positioning ring communicates the second oil passing hole 219 with the fifth flow passage 217; the active blocking ball 27 is located below the upper positioning ring 211 and is used for realizing medium blocking of the fifth flow passage 217 and the second oil passing hole 219.

The oil supplementing spring 210, the spring seat 28 and the exhaust spring 29 are sequentially arranged in the fourth flow passage 216 and/or the fifth flow passage 217, the top end of the oil supplementing spring 210 abuts against the active blocking ball 27, and the bottom end of the oil supplementing spring is arranged on the spring seat 28 and used for providing closing acting force for the active blocking ball 27; the top end of the exhaust spring 29 is mounted on the spring seat 28 and the bottom end abuts against the follower blocker ball 26 for providing a closing force to the follower blocker ball 26.

The embodiment of the utility model provides an in, disk seat flange 21 and holding ring clamp plate 24 are connected through a plurality of connecting rods 213, realize holding ring clamp plate 24, go up valve seat 23, lower disk seat 22 and disk seat flange 21's axial fixity and connect, and connecting rod 213 specifically can adopt the screw, and holding ring clamp plate 24 is passed to connecting rod 213 upper end, and the lower extreme passes disk seat flange 21, with disk seat flange 21 screw thread fixed connection. In addition, the valve seat connecting flange 21 is further provided with a mounting hole 214, and the valve seat connecting flange 21 is fixedly mounted on the oil compensating disc 1 through the mounting hole 214.

In the embodiment of the present invention, the spring seat 28 includes a radial connecting plate 221 and an axial sleeve 222, the radial connecting plate 221 is fixed at the middle of the outer wall of the axial sleeve 222, and the end of the radial connecting plate 221 is embedded in the groove of the fourth flow channel 216 or the fifth flow channel 217. In order to make the hydraulic oil supplement more rapidly, the radial connecting plate 221 is provided with a fifth through hole 223 running through in the axial direction, so that the hydraulic oil can flow in the inner cavity of the axial sleeve 222 and the fifth through hole 223 simultaneously.

In the embodiment of the present invention, the contact surface of the upper valve seat 23 and the lower valve seat 22 is provided with a first sealing ring 224, and the contact surface of the lower positioning ring 25 and the valve seat connecting flange 21 is provided with a second sealing ring 225. The third sealing ring 226 is arranged on the contact surface between the upper positioning ring 211 and the positioning ring pressing plate 24, and the arrangement of the above sealing ring can prevent the external environment from influencing the inside of the exhaust oil replenishing valve 2 and prevent external water or dust from entering the exhaust oil replenishing valve 2.

When the exhaust oil supplementing valve 2 exhausts, the driven blocking ball 26 blocks the fourth flow passage 216 and the oil supplementing hole 215 under the action of the exhaust spring 29, the driving blocking ball 27 blocks the fifth flow passage 217 and the second oil passing hole 219 under the action of the oil supplementing spring 210, at this time, gas accumulated in the diaphragm pump enters the oil supplementing hole 215 of the valve seat connecting flange 21, enters the fourth flow passage 216 through the air passing hole 220 of the lower positioning ring 25, flows in the fourth flow passage 216 and the fifth flow passage 217, is exhausted through the second exhaust hole 218 on the upper valve seat 23, and the exhaust process runs through the working process of the diaphragm pump.

When the oil amount in the hydraulic cavity is insufficient, oil is supplemented through the exhaust oil supplementing valve 2, when oil is supplemented, pressure oil with certain pressure flows in the second oil passing hole 219 to jack the driving blocking ball 27 open, so that the second oil passing hole 219 is communicated with the fifth flow passage 217, the pressure oil flows in the fourth flow passage 216 and the fifth flow passage 217, at the moment, the force transmission guide rod is pushed to move under the action of the diaphragm hose, the valve opening jacking rod is driven to rotate, the ejector rod moves upwards, the ejector rod penetrates through the oil supplementing hole 215 to jack the driven blocking ball 26, so that the oil supplementing hole 215 is communicated with the fourth flow passage 216, the pressure oil flows in the oil supplementing hole 215 from the fourth flow passage 216, flows out of the oil supplementing hole 215 and is filled in the plunger cavity, oil supplementation of the pressure oil from top to bottom is completed, and oil supplementation of the plunger cavity is completed.

This exhaust oil supplementing valve 2 can realize the automatic oil supplementing of diaphragm pump for the oil mass in the diaphragm pump plunger intracavity is invariable basically, guarantees the diaphragm pump and normally works, has improved its operational reliability. The exhaust oil supplementing valve is installed on the oil supplementing disc 1, and gas in the cavity of the diaphragm pump can be rapidly discharged, so that the phenomenon that the diaphragm pump generates gas accumulation is avoided, the problems that equipment shakes, the diaphragm is damaged, the conveying efficiency is reduced, conveying pressure is disordered and the like are solved, the working performance of the diaphragm pump is in the best state, and the working reliability of the diaphragm pump is improved.

As shown in fig. 12, the drain 5 includes a manual drain valve and a one-way flow-through device. When the liquid discharging device 5 works, redundant working liquid in the plunger cavity flows into the working liquid box through the manual liquid discharging valve and the one-way overflowing device, and gas in the plunger cavity is discharged at the same time. After the drainage is finished, the drainage valve core 52 of the manual drainage valve falls on the drainage valve seat 51 to form an effective seal, and the working fluid in the plunger cavity cannot flow out through the drainage device 5. The drainage device 5 can accurately drain redundant liquid, has a good exhaust effect, and can effectively prevent working liquid from flowing back to the plunger cavity.

The manual drain valve comprises a drain valve seat 51, a drain valve core 52, a valve sleeve 53, a sealing device 54 and a lock nut 55. The liquid discharge valve seat 51 is positioned in the oil supplementing disc 1, is fixedly installed with the oil supplementing disc 1, and is internally provided with a flow passage cavity, the inlet of the flow passage cavity is communicated with the plunger cavity, and the outlet of the flow passage cavity is communicated with the one-way flow passage device; one end of the liquid drainage valve core 52 is arranged in an inlet of the overflowing cavity and used for blocking overflowing media, the other end of the liquid drainage valve core passes through the valve sleeve 53 and extends out of the valve sleeve 53, the interior of the front end of the valve sleeve 53 is in threaded connection with the liquid drainage valve core 52, the exterior of the front end of the valve sleeve is in threaded connection with the liquid drainage valve seat 51, the tail end of the valve sleeve is provided with an annular cavity, the sealing device 54 is sleeved on the liquid drainage valve core 52 and is located in the annular cavity to form axial sealing, and the locking nut 55 is fixedly connected with the valve sleeve 53. The other end of the liquid discharge valve core 52 is provided with a hand wheel 514, the hand wheel 514 is arranged on the liquid discharge valve core 52 through a nut 515, an operator can conveniently operate the liquid discharge valve core 52, and a gasket 516 is arranged between the nut 515 and the liquid discharge valve core 52 to prevent the nut 515 and the liquid discharge valve core 52 from sliding relatively.

The axial contact surface of the drainage valve seat 51 and the valve sleeve 53 is provided with a second sealing gasket 511, and the contact surface of the drainage valve seat 51 and the oil supplement disc 1 is provided with an O-shaped sealing ring 517, so that the leakage of the internal liquid or the entrance of the external medium into the cavity is prevented.

The inlet of the manual drain valve is communicated with the plunger cavity, and the outlet of the manual drain valve is communicated with the one-way overflowing device. The matching surface of the liquid discharge valve core 52 and the liquid discharge valve seat 51 is a conical surface, and the outer conical surface of the liquid discharge valve core 52 is pressed on the inner conical surface of the liquid discharge valve seat 51 to form effective sealing; the liquid drainage valve core 52 is lifted, a gap is formed between the liquid drainage valve core 52 and the liquid drainage valve seat 51, working liquid in the plunger cavity flows in and flows into the one-way overflowing device through an internal flow passage of the manual liquid drainage valve, and the gap and the flow are increased along with the lifting of the liquid drainage valve core 52.

The front end of the sealing conical surface of the liquid drainage valve core 52 is provided with a spherical crown cylindrical surface, and the spherical crown surface can effectively reduce the impact of working liquid at a valve opening; meanwhile, the outer cylindrical surface of the liquid drainage valve core 52 and the inner hole of the liquid drainage valve seat 51 form a damping ring, so that the impact at the valve opening can be greatly reduced, the flow of working liquid is reduced, and the flow rate of the working liquid is also reduced. Therefore, when the working fluid flows to the valve port, the flow is stable and small, a section of damping ring is formed between the outer conical surface of the liquid discharge valve core 52 and the inner conical surface of the liquid discharge valve seat 51, and the liquid discharge valve core 52 can be slightly lifted and lowered through thread transmission, so that damping fine adjustment is realized, and finally flow fine adjustment is realized. The fine adjustment of the liquid discharge flow finally realizes the optimal working liquid amount of the plunger cavity, the working performance of the diaphragm pump is in the optimal state, and the reliability is greatly improved.

When the manual drain valve drains liquid, the drain valve core 52 moves axially, the rod part of the drain valve core 52 moves relative to the sealing device 54, and the sealing device 54 and the rod part of the drain valve core 52 are in dynamic sealing; after the drainage is finished, the drainage valve core 52 is in a static state, static sealing is formed between the sealing device 54 and the rod part of the drainage valve core 52 at the moment, and the rod part of the drainage valve core 52 is sealed simultaneously to meet the requirements of dynamic sealing and static sealing. The sealing device 54 may be a mechanical seal or a packing seal. The embodiment adopts packing to seal, packing is sealed including hard seal 512 and soft seal 513, hard seal 512 sets up between soft seal 513, the left side of packing is sealed is provided with filler roof 59, the right-hand member compresses tightly through packing clamping ring 510, lock nut 55 compresses tightly packing clamping ring 510, packing clamping ring 510 compresses tightly packing is sealed, packing is sealed compressed, produce and warp, the valve barrel 53 hole is hugged closely to the excircle, the pole portion of hole enclasping liquid drainage case 52, form effective, reliable sealed, can satisfy the dynamic seal and the static seal requirement of liquid drainage case 52 pole portion simultaneously. In conclusion, the packing seal has higher reliability compared with the seals such as O-rings, shaft seals and the like.

The one-way overflow device comprises a one-way overflow channel 56, a baffle 57 and a valve ball 58, wherein the one-way overflow channel 56 is a conical cavity which is arranged on the oil supplementing disc 1 and is communicated with the overflow cavity of the manual drain valve, and the valve ball 58 is arranged in the conical cavity and is used for blocking a medium of the one-way overflow channel 56; a baffle 57 is provided on the oil compensating disc 1 at the outlet end of the one-way flow passage 56 for preventing the valve ball from entering the oil reservoir 519 of the membrane pump with the medium.

The one-way overflow device mainly comprises a baffle 57 and a valve ball 58, and has the main function of preventing working fluid in the working fluid tank from flowing back into the plunger cavity and keeping the working fluid quantity of the plunger cavity as the optimal fluid quantity. The one-way overflow device has a simple structure, only comprises two parts, the steel ball is the liquid drainage valve core 52, and the baffle 57 prevents the liquid drainage valve core 52 from falling out of a valve port. The one-way overflowing device has simple parts, and the steel ball is a standard component, can be purchased and is very cheap; the baffle 57 is a common structural member, and is simple to produce and low in cost.

Claims (10)

1. The utility model provides a diaphragm pump is with control valve integrated package which characterized in that: comprises an oil supplementing disc (1), an exhaust oil supplementing valve (2) arranged above the oil supplementing disc (1), a pressure interval exhaust valve (3) and two safety valves (4); a liquid drainage device (5), an oil drainage component (6) and an exhaust one-way valve (7) which are arranged on the side surface of the oil supplementing disc (1);

the oil supplementing disc (1) is arranged on a plunger cavity (11) of the diaphragm pump, a first oil passing hole (12) communicated with the inside of the plunger cavity (11) is axially arranged on the oil supplementing disc, a first through hole (13), a second through hole (14), a third through hole (15) and a fourth through hole (16) are radially arranged on the oil supplementing disc, one end of each through hole is communicated with the outside, the other end of each through hole is communicated with the first oil passing hole (12), and an L-shaped through hole (17) is further arranged at the edge of the oil supplementing disc;

the L-shaped through hole (17) comprises a transverse hole and a vertical hole which are communicated with each other, the transverse hole is communicated with the outside of the side surface of the oil supplementing disc (1), and the vertical hole is communicated with the outside above the oil supplementing disc (1);

the exhaust oil supplementing valve (2) is arranged above the first oil passing hole (12);

the working end of the pressure interval exhaust valve (3) corresponds to the first through hole (13);

the working end of the liquid drainage device (5) corresponds to the second through hole (14);

working ends of the two safety valves (4) respectively correspond to the third through hole (15) and the fourth through hole (16), and outer ports of the third through hole (15) and the fourth through hole (16) are sealed;

the oil discharge part (6) is arranged at the outer end of the transverse hole;

a maintenance hole communicated with the fourth through hole (16) is arranged above the fourth through hole (16) between the safety valve (4) and the exhaust oil supplementing valve (2), and a plug (8) is installed in the maintenance hole;

the inlet end of the exhaust one-way valve (7) extends into a diaphragm cavity (9) of the diaphragm pump, and the outlet end of the exhaust one-way valve is communicated with the first through hole (13) through a connecting pipe (91).

2. The control valve manifold block for a diaphragm pump according to claim 1, wherein:

the pressure interval exhaust valve (3) comprises a compression nut (31), a sealing valve core (32), a connecting valve seat (33) and a restoring spring (34);

the connecting valve seat (33) is of a sleeve structure, a first flow passage (331), a second flow passage (332) and a third flow passage (333) which are communicated in sequence are arranged in the connecting valve seat, and a conical flow passage (334) is arranged between the second flow passage (332) and the third flow passage (333);

the compression nut (31) is arranged in the first flow channel (331), and a first exhaust hole (311) communicated with the second flow channel (332) is formed in the compression nut;

the sealing valve core (32) is arranged in the second flow passage (332) and is in clearance fit with the second flow passage (332), the top surface of the sealing valve core (32) is in contact with the bottom surface of the compression nut (31), and the fluid between the first exhaust hole (311) and the second flow passage (332) is blocked, so that the sealing valve core (32) is closed;

the bottom surface of the sealing valve core (32) is provided with a conical surface (321), and the conical surface (321) is matched with a conical flow passage (334) connected with the valve seat (33);

a spring mounting groove (322) is formed in the sealed valve core (32), the restoring spring (34) is mounted in the spring mounting groove (322), the bottom end of the restoring spring (34) abuts against the bottom of the spring mounting groove (322), and the top end of the restoring spring abuts against the bottom surface of the compression nut (31) and is used for providing restoring force for opening the sealed valve core (32);

the connecting valve seat (33) is installed on the oil supplementing disc (1), and the third flow channel (333) is communicated with the diaphragm cavity (9) through a first through hole (13) formed in the oil supplementing disc (1), so that exhaust of the diaphragm cavity (9) is achieved.

3. The control valve manifold block for a diaphragm pump according to claim 2, wherein: a spring positioning groove (312) is formed in the bottom surface of the compression nut (31), and the top end of the recovery spring (34) is arranged in the spring positioning groove (312), so that the recovery spring (34) works stably;

the compression nut (31) is a T-shaped nut and comprises a head portion (313) and a sealing section (314) which are connected, the head portion (313) is arranged on the top of the connecting valve seat (33), and the sealing section (314) is arranged in the first flow passage (331).

4. The control valve cartridge for a diaphragm pump according to any one of claims 1 to 3, wherein: the exhaust oil supplementing valve (2) comprises a valve seat connecting flange (21), a lower valve seat (22), an upper valve seat (23), a positioning ring pressing plate (24), a lower positioning ring (25), a driven blocking ball (26), a driving blocking ball (27), a spring seat (28), an exhaust spring (29) and an oil supplementing spring (210);

the valve seat connecting flange (21) is arranged on the oil supplementing disc (1), and an oil supplementing hole (215) communicated with the first oil passing hole (12) is formed in the valve seat connecting flange;

the lower valve seat (22) is arranged above the valve seat connecting flange (21), and a fourth flow passage (216) communicated with the oil supplementing hole (215) is arranged in the lower valve seat (22);

the upper valve seat (23) is arranged above the lower valve seat (22), a fifth flow passage (217) communicated with the fourth flow passage (216) is arranged in the upper valve seat, and meanwhile, a second exhaust hole (218) for exhausting is formed in the upper valve seat (23);

the positioning ring pressing plate (24) is arranged above the upper valve seat (23), and a second oil passing hole (219) communicated with the fifth flow passage (217) is formed in the positioning ring pressing plate;

the lower positioning ring (25) is arranged in the fourth flow passage (216), an inner cavity of the lower positioning ring communicates the oil supplementing hole (215) with the fourth flow passage (216), and meanwhile, an air passing hole (220) communicating the oil supplementing hole (215) with the fourth flow passage (216) is formed in the annular wall of the lower positioning ring (25); the driven blocking ball (26) is arranged above the lower positioning ring (25) and is used for realizing medium blocking of a fourth flow passage (216) and an oil supplementing hole (215); the active blocking ball (27) is positioned in the fifth flow passage (217) and is used for realizing medium blocking of the fifth flow passage (217) and the second oil passing hole (219);

the oil supplementing spring (210), the spring seat (28) and the exhaust spring (29) are sequentially arranged in a fourth flow passage (216) and/or a fifth flow passage (217), the top end of the oil supplementing spring (210) is abutted against the driving blocking ball (27), the bottom end of the oil supplementing spring is mounted on the spring seat (28) and used for providing closing acting force for the driving blocking ball (27), the top end of the exhaust spring (29) is mounted on the spring seat (28), and the bottom end of the exhaust spring is abutted against the driven blocking ball (26) and used for providing closing acting force for the driven blocking ball (26).

5. The control valve manifold block for a diaphragm pump according to claim 4, wherein:

an exhaust screw (212) is arranged in a second exhaust hole (218) on the upper valve seat (23), and the exhaust screw (212) is installed in the second exhaust hole (218) in a clearance mode.

6. The control valve manifold block for a diaphragm pump according to claim 5, wherein: the spring seat (28) comprises a radial connecting plate (221) and an axial sleeve (222), the radial connecting plate (221) is fixedly arranged in the middle of the outer wall of the axial sleeve (222), and the end part of the radial connecting plate (221) is embedded into a groove of the fourth flow passage (216) or the fifth flow passage (217).

7. The control valve manifold block for a diaphragm pump according to claim 6, wherein: a fifth through hole (223) which penetrates through the radial connecting plate (221) in the axial direction is formed in the radial connecting plate;

an upper positioning ring (211) is arranged in the fifth flow passage (217), and an inner annular cavity of the upper positioning ring (211) is communicated with the fifth flow passage (217) through a second oil passing hole (219); the active blocking ball (27) is positioned below the upper positioning ring (211).

8. The control valve manifold block for a diaphragm pump according to claim 7, wherein:

the oil supplementing device is characterized in that a mounting hole (214) is formed in the valve seat connecting flange (21), and the valve seat connecting flange (21) is connected with the oil supplementing disc (1) through the mounting hole (214).

9. The control valve manifold block for a diaphragm pump according to claim 8, wherein:

the liquid discharge device (5) comprises a manual liquid discharge valve and a one-way overflowing device;

the manual drain valve comprises a drain valve seat (51), a drain valve core (52), a valve sleeve (53), a sealing device (54) and a locking nut (55);

the liquid discharge valve seat (51) is arranged on the oil supplementing disc (1), an overflowing cavity is arranged in the liquid discharge valve seat, an inlet of the overflowing cavity is communicated with the second through hole (14), and an outlet of the overflowing cavity is communicated with the one-way overflowing device; one end of the liquid drainage valve core (52) is arranged in an inlet of the overflowing cavity and used for blocking overflowing media, the other end of the liquid drainage valve core penetrates through the valve sleeve (53) and extends out of the valve sleeve (53), the valve sleeve (53) is fixedly connected with the liquid drainage valve seat (51), the front end of the valve sleeve (53) is in threaded connection with the liquid drainage valve core (52), the tail end of the valve sleeve is provided with an annular cavity, the sealing device (54) is sleeved on the liquid drainage valve core (52) and located in the annular cavity, and the locking nut (55) is fixedly connected with the valve sleeve (53) and used for axially positioning and installing the sealing device (54);

the one-way overflowing device comprises a one-way overflowing channel (56), a baffle (57) and a valve ball (58), wherein the one-way overflowing channel (56) is a conical cavity and is arranged on the oil supplementing disc (1) and communicated with an overflowing cavity of the manual drain valve, and the valve ball (58) is arranged in the conical cavity and is used for blocking a medium of the one-way overflowing channel (56); the baffle (57) is arranged on the oil supplementing disc (1) and is positioned at the outlet end of the one-way overflowing channel (56) and used for preventing the valve ball (58) from entering an oil storage tank (519) of the diaphragm pump along with media.

10. The control valve manifold block for a diaphragm pump according to claim 9, wherein: the matching surface of the liquid drainage valve core (52) and the liquid drainage valve seat (51) is a conical surface;

the front end of the sealing conical surface of the liquid drainage valve core (52) is arranged to be a spherical crown cylindrical surface;

the sealing device (54) is a mechanical seal or a packing seal;

the packing seal comprises hard packing (512) and soft packing (513), wherein the hard packing (512) is arranged between the soft packing (513), a packing top plate (59) is arranged on the left side of the packing seal, and the right end of the packing seal is pressed through a packing press ring (510).

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