阅读说明：本技术 一种隔膜泵用排气补油阀 (Exhaust oil supplementing valve for diaphragm pump ) 是由 屈卫德 王贵 祁文 左仓 付岳峰 蒋科 卢飚 段鹏飞 宁轩 赵军 李峰 金忠升 于 2020-04-15 设计创作，主要内容包括：本发明提供一种隔膜泵用排气补油阀,解决现有隔膜泵成本较高以及占用较大安装空间的问题。该排气补油阀中,阀座连接法兰设置在补油盘上,设置有补油孔；下阀座设置在阀座连接法兰的上方,设置有与补油孔相连通的第一流道；上阀座设置在下阀座的上方,其内部设置有与第一流道连通的第二流道；定位环压板设置在上阀座的上方,其内部设置有与第二流道连通的过油孔；下定位环设置在第一流道内,其内腔将补油孔和第一流道连通,同时,下定位环的环壁上设置有将补油孔和第一流道连通的过气孔；从动阻断球设置在下定位环的上方；主动阻断球位于第二流道内；补油弹簧、弹簧座和排气弹簧依次设置在第一流道或第二流道内。(The invention provides an exhaust oil supplementing valve for a diaphragm pump, which solves the problems of high cost and large occupied installation space of the existing diaphragm pump. In the exhaust oil supplementing valve, a valve seat connecting flange is arranged on an oil supplementing disc and is provided with an oil supplementing hole; the lower valve seat is arranged above the valve seat connecting flange and is provided with a first flow passage communicated with the oil supplementing hole; the upper valve seat is arranged above the lower valve seat, and a second flow passage communicated with the first flow passage is arranged in the upper valve seat; the positioning ring pressing plate is arranged above the upper valve seat, and an oil passing hole communicated with the second flow passage is formed in the positioning ring pressing plate; the lower positioning ring is arranged in the first flow channel, an inner cavity of the lower positioning ring is communicated with the oil supplementing hole and the first flow channel, and meanwhile, an air passing hole communicated with the oil supplementing hole and the first flow channel is formed in the annular wall of the lower positioning ring; the driven blocking ball is arranged above the lower positioning ring; the active blocking ball is positioned in the second flow passage; the oil supplementing spring, the spring seat and the exhaust spring are sequentially arranged in the first flow passage or the second flow passage.)

1. The utility model provides a diaphragm pump is with exhaust fuel filling valve which characterized in that: the valve seat comprises a valve seat connecting flange (1), a lower valve seat (2), an upper valve seat (3), a positioning ring pressing plate (4), a lower positioning ring (5), a driven blocking ball (6), a driving blocking ball (7), a spring seat (8), an exhaust spring (9) and an oil supplementing spring (10);

the valve seat connecting flange (1) is arranged on the oil supplementing disc (27), and an oil supplementing hole (15) is formed in the valve seat connecting flange;

the lower valve seat (2) is arranged above the valve seat connecting flange (1), and a first flow passage (16) communicated with the oil supplementing hole (15) is arranged in the lower valve seat;

the upper valve seat (3) is arranged above the lower valve seat (2), a second flow passage (17) communicated with the first flow passage (16) is arranged in the upper valve seat, and meanwhile, an exhaust hole (18) for exhausting is formed in the upper valve seat (3);

the positioning ring pressing plate (4) is arranged above the upper valve seat (3), and an oil passing hole (19) communicated with the second flow channel (17) is formed in the positioning ring pressing plate;

the lower positioning ring (5) is arranged in the first flow passage (16), an inner cavity of the lower positioning ring communicates the oil supplementing hole (15) with the first flow passage (16), and meanwhile, an air passing hole (20) communicating the oil supplementing hole (15) with the first flow passage (16) is formed in the annular wall of the lower positioning ring (5); the driven blocking ball (6) is arranged above the lower positioning ring (5) and used for realizing medium blocking of the first flow channel (16) and the oil supplementing hole (15); the active blocking ball (7) is positioned in the second flow passage (17) and is used for realizing the medium blocking of the second flow passage (17) and the oil passing hole (19);

mend oil spring (10), spring holder (8) and exhaust spring (9) and set gradually in first runner (16) and/or second runner (17), the top of mending oil spring (10) is supported and is leaned on initiative ball (7) that blocks, and the bottom is installed on spring holder (8) for provide the effort of closing for initiative ball (7) that blocks, the top of exhaust spring (9) is installed on spring holder (8), and the bottom is supported and is leaned on driven ball (6) that blocks, is used for providing the effort of closing for driven ball (6) that blocks.

2. The exhaust oil replenishment valve for a diaphragm pump according to claim 1, characterized in that: an exhaust screw (12) is arranged in an exhaust hole (18) on the upper valve seat (3), and the exhaust screw (12) is installed in the exhaust hole (18) in a clearance mode.

3. The exhaust oil replenishment valve for a diaphragm pump according to claim 2, characterized in that: the spring seat (8) comprises a radial connecting plate (21) and an axial sleeve (22), the radial connecting plate (21) is fixedly arranged in the middle of the outer wall of the axial sleeve (22), and the end part of the radial connecting plate (21) is embedded into a groove of the first flow passage (16) or the second flow passage (17).

4. The exhaust oil replenishment valve for a diaphragm pump according to claim 3, characterized in that: and the radial connecting plate (21) is provided with a through hole (23) which is axially communicated.

5. The exhaust oil replenishment valve for a diaphragm pump according to any one of claims 1 to 4, characterized in that: an upper positioning ring (11) is arranged in the second flow passage (17), and an oil passing hole (19) is communicated with the second flow passage (17) through an inner cavity of the upper positioning ring (11); the active blocking ball (7) is positioned below the upper positioning ring (11).

6. The exhaust oil replenishment valve for a diaphragm pump according to claim 5, characterized in that: the valve seat connecting flange (1) is connected with the positioning ring pressing plate (4) through a plurality of connecting rods (13), so that the positioning ring pressing plate (4), the upper valve seat (3), the lower valve seat (2) and the valve seat connecting flange (1) are axially connected.

7. The exhaust oil replenishment valve for a diaphragm pump according to claim 6, characterized in that: the valve seat connecting flange (1) is provided with a mounting hole (14), and the valve seat connecting flange (1) is connected with an oil supplementing disc (27) through the mounting hole (14).

8. The exhaust oil replenishment valve for a diaphragm pump according to claim 7, characterized in that: and a first sealing ring (24) is arranged on the contact surface of the upper valve seat (3) and the lower valve seat (2).

9. The exhaust oil replenishment valve for a diaphragm pump according to claim 8, characterized in that: and a second sealing ring (25) is arranged on the contact surface of the lower positioning ring (5) and the valve seat connecting flange (1).

10. The exhaust oil replenishment valve for a diaphragm pump according to claim 9, characterized in that: and a third sealing ring (26) is arranged on the contact surface of the upper positioning ring (11) and the positioning ring pressing plate (4).

Technical Field

The invention relates to a diaphragm pump valve, in particular to an exhaust oil supplementing valve for a 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 diaphragm of the diaphragm pump is two layers of hoses, including an inner hose and an outer hose, and in a normal state, the pressure between the two layers of hoses is zero, the inner hose is in contact with a conveying material, and the outer hose is in contact with hydraulic fluid. When the diaphragm pump is started and debugged, a part of working liquid in a plunger cavity of the diaphragm pump is discharged, a gas accumulation phenomenon can be generated in the working process, and the gas is discharged in time to influence the working performance of the diaphragm pump, for example, the problems of equipment vibration, diaphragm damage, conveying efficiency reduction, conveying pressure disorder and the like are caused.

Meanwhile, when the diaphragm pump works, along with the reciprocating motion of the plunger, the hydraulic oil in the hydraulic cavity drives the diaphragm to reciprocate under the action of the plunger, so that the suction and discharge processes of the pump are completed. The amount of hydraulic oil in the hydraulic chamber must be kept constant to ensure that the position of the forward and backward movement pole of the diaphragm is fixed. Otherwise, the diaphragm will break quickly, and if the oil amount in the hydraulic chamber is insufficient, the diaphragm will break by striking the rear wall of the diaphragm chamber at the end of the feeding.

For solving above problem, all generally set up discharge valve and oil supplementing valve alone on the current diaphragm pump, but this kind of setting has not only increased the manufacturing cost of diaphragm pump, has still occupied great installation space.

Disclosure of Invention

The invention aims to solve the problems of high cost and large occupied installation space of the existing diaphragm pump, and provides an exhaust oil supplementing valve for the diaphragm pump.

In order to solve the above problems, the technical scheme of the invention is as follows:

an exhaust oil supplementing valve for a diaphragm pump 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 is formed in the valve seat connecting flange; the lower valve seat is arranged above the valve seat connecting flange, and a first flow passage 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 second flow passage communicated with the first flow passage is arranged in the upper valve seat, and meanwhile, an exhaust hole for exhausting is formed in the upper valve seat; the positioning ring pressing plate is arranged above the upper valve seat, and an oil passing hole communicated with the second flow passage is formed in the positioning ring pressing plate; the lower positioning ring is arranged in the first flow channel, an inner cavity of the lower positioning ring is communicated with the oil supplementing hole and the first flow channel, and meanwhile, an air passing hole communicated with the oil supplementing hole and the first flow channel 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 first flow passage and the oil supplementing hole; the active blocking ball is positioned in the second flow passage and is used for realizing the medium blocking of the second flow passage and the oil passing hole; the oil supplementing spring, the spring seat and the exhaust spring are sequentially arranged in the first flow channel and/or the second 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 an exhaust hole in the upper valve seat, and the exhaust screw is installed in the 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 part of the radial connecting plate is embedded into a groove of the first flow passage or the second flow passage.

Furthermore, an axially through hole is formed in the radial connecting plate.

Furthermore, an upper positioning ring is arranged in the second flow channel, and an inner cavity of the upper positioning ring is communicated with the oil passing hole and the second flow channel; the active blocking ball is located below the upper positioning ring and used for achieving medium blocking of the second flow passage and the oil passing hole.

Furthermore, the valve seat connecting flange is connected with the positioning ring pressing plate through a plurality of connecting rods, so that the axial connection of the positioning ring pressing plate, the upper valve seat, the lower valve seat and the valve seat connecting flange is realized.

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

Furthermore, a first sealing ring is arranged on the contact surface of the upper valve seat and the lower valve seat.

Furthermore, a second sealing ring is arranged on the contact surface of the lower positioning ring and the valve seat connecting flange.

Furthermore, a third sealing ring is arranged on the contact surface of the upper positioning ring and the positioning ring pressing plate.

Compared with the prior art, the invention has the following beneficial effects:

1. the exhaust oil supplementing valve for the diaphragm pump can realize the automatic exhaust function and the automatic oil supplementing function, not only avoids the problem of high cost of arranging a single exhaust valve and an oil supplementing valve, but also saves the installation space of the diaphragm pump.

2. The exhaust oil supplementing valve for the diaphragm pump can realize automatic oil supplementing of the diaphragm pump, so that the oil quantity in a hydraulic cavity of the diaphragm pump is basically constant, the normal operation of the diaphragm pump is ensured, and the operation reliability of the diaphragm pump is improved.

3. The exhaust oil supplementing valve for the diaphragm pump is arranged on the oil supplementing disc, and can rapidly discharge gas in the cavity of the diaphragm pump, so that the gas accumulation phenomenon of the diaphragm pump is avoided, the problems of equipment vibration, damage of the diaphragm, reduction of conveying efficiency, disorder of conveying pressure and the like are avoided, the working performance of the diaphragm pump is in the best state, and the working reliability of the diaphragm pump is improved.

4. The exhaust oil supplementing valve for the diaphragm pump has the advantages of simple structure, low cost, convenience in installation and operation and strong practicability.

Drawings

FIG. 1 is a first schematic structural diagram of an exhaust oil replenishing valve for a diaphragm pump according to the present invention;

FIG. 2 is a schematic structural diagram of a second exhaust oil replenishing valve for a diaphragm pump according to the present invention;

FIG. 3 is a top view of FIG. 1;

FIG. 4 is a schematic structural diagram of a spring seat in the exhaust oil compensation valve for the diaphragm pump according to the present invention;

fig. 5 is a schematic mounting diagram of the exhaust oil replenishing valve for the diaphragm pump according to the present invention.

Reference numerals: 1-valve seat connecting flange, 2-lower valve seat, 3-upper valve seat, 4-positioning ring pressure plate, 5-lower positioning ring, 6-driven blocking ball, 7-driving blocking ball, 8-spring seat, 9-exhaust spring, 10-oil-supplementing spring, 11-upper positioning ring, 12-exhaust screw, 13-connecting rod, 14-mounting hole, 15-oil-supplementing hole, 16-first flow passage, 17-second flow passage, 18-exhaust hole, 19-oil-passing hole, 20-air-passing hole, 21-radial connecting plate, 22-axial sleeve, 23-through hole, 24-first sealing ring, 25-second sealing ring, 26-third sealing ring, 27-oil-supplementing disc, 28-ejector rod, 29-valve opening ejector rod, 30-force transmission guide rod, 31-membrane hose.

Detailed Description

The invention is described in further detail below with reference to the figures and specific embodiments.

In order to control the constant oil quantity and the discharge of gas in the hydraulic cavity of the diaphragm pump, the invention provides the exhaust oil supplementing valve for the diaphragm pump, which can realize the automatic exhaust function and the automatic oil supplementing function, not only avoids the problem of high cost of arranging a single exhaust valve and an oil supplementing valve, but also saves the installation space and ensures the normal work of the diaphragm pump.

As shown in fig. 1 to 4, the exhaust oil replenishing valve for a diaphragm pump according to the present invention includes a valve seat connecting flange 1, a lower valve seat 2, an upper valve seat 3, a positioning ring pressing plate 4, a lower positioning ring 5, an upper positioning ring 11, a driven blocking ball 6, a driving blocking ball 7, a spring seat 8, an exhaust spring 9, and an oil replenishing spring 10.

The valve seat connecting flange 1 is arranged on the oil supplementing disc 27, and the oil supplementing hole 15 is formed in the valve seat connecting flange; the lower valve seat 2 is arranged above the valve seat connecting flange 1, and a first flow channel 16 communicated with the oil supplementing hole 15 is arranged in the lower valve seat 2; the upper valve seat 3 is arranged above the lower valve seat 2, a second flow passage 17 communicated with the first flow passage 16 is arranged in the upper valve seat, meanwhile, an exhaust hole 18 used for exhausting is arranged on the upper valve seat 3, an exhaust screw 12 is arranged in the exhaust hole 18, the exhaust screw 12 is installed in the exhaust hole 18 in a clearance mode, the exhaust screw 12 enables air in the second flow passage 17 to slowly flow out of the second flow passage 17, and meanwhile, external water or dust is prevented from entering the second flow passage 17. The positioning ring pressing plate 4 is arranged above the upper valve seat 3, and is internally provided with an oil passing hole 19 communicated with the second flow passage 17.

The lower positioning ring 5 is arranged in the first flow passage 16, the inner cavity of the lower positioning ring communicates the oil supplementing hole 15 with the first flow passage 16, and meanwhile, the ring wall of the lower positioning ring 5 is provided with an air passing hole 20 communicating the oil supplementing hole 15 with the first flow passage 16; the driven blocking ball 6 is arranged above the lower positioning ring 5 and used for realizing medium blocking of the first flow passage 16 and the oil supplementing hole 15; the upper positioning ring 11 is arranged in the second flow passage 17, and the inner cavity of the upper positioning ring communicates the oil passing hole 19 with the second flow passage 17; the active blocking ball 7 is positioned below the upper positioning ring 11 and is used for realizing the medium blocking of the second flow passage 17 and the oil passing hole 19.

The oil supplementing spring 10, the spring seat 8 and the exhaust spring 9 are sequentially arranged in the first flow passage 16 and/or the second flow passage 17, the top end of the oil supplementing spring 10 abuts against the active blocking ball 7, and the bottom end of the oil supplementing spring is arranged on the spring seat 8 and used for providing closing acting force for the active blocking ball 7; the top end of the exhaust spring 9 is arranged on the spring seat 8, and the bottom end of the exhaust spring is abutted against the driven blocking ball 6 and used for providing closing acting force for the driven blocking ball 6.

In the embodiment of the invention, the valve seat connecting flange 1 and the positioning ring pressing plate 4 are connected through a plurality of connecting rods 13, so that the positioning ring pressing plate 4, the upper valve seat 3, the lower valve seat 2 and the valve seat connecting flange 1 are axially and fixedly connected, the connecting rods 13 can specifically adopt screws, the upper ends of the connecting rods 13 penetrate through the positioning ring pressing plate 4, the lower ends of the connecting rods 13 penetrate through the valve seat connecting flange 1 and are fixedly connected with the valve seat connecting flange 1 through threads. In addition, the valve seat connecting flange 1 is further provided with a mounting hole 14, and the valve seat connecting flange 1 is fixedly mounted on the oil compensating disc 27 through the mounting hole 14.

In the embodiment of the invention, the spring seat 8 comprises a radial connecting plate 21 and an axial sleeve 22, the radial connecting plate 21 is fixedly arranged in the middle of the outer wall of the axial sleeve 22, and the end part of the radial connecting plate 21 is embedded in the groove of the first flow passage 16 or the second flow passage 17. In order to make the hydraulic oil be replenished more quickly, the radial web 21 is provided with axially through-going through-holes 23, so that the hydraulic oil can flow in the axial sleeve 22 interior and through-holes 23 simultaneously.

In the embodiment of the invention, a first sealing ring 24 is arranged on the contact surface of the upper valve seat 3 and the lower valve seat 2, and a second sealing ring 25 is arranged on the contact surface of the lower positioning ring 5 and the valve seat connecting flange 1. The third sealing ring 26 is arranged on the contact surface of the upper positioning ring 11 and the positioning ring pressing plate 4, and the arrangement of the upper sealing ring can prevent the external environment from influencing the exhaust oil supplementing valve for the diaphragm pump and prevent external water or dust from entering the exhaust oil supplementing valve for the diaphragm pump.

When the exhaust oil supplementing valve for the diaphragm pump is used for exhausting air, the driven blocking ball 6 blocks the first flow passage 16 and the oil supplementing hole 15 under the action of the exhaust spring 9, the driving blocking ball 7 blocks the second flow passage 17 and the oil passing hole 19 under the action of the oil supplementing spring 10, at the moment, gas accumulated in the diaphragm pump enters the oil supplementing hole 15 of the valve seat connecting flange 1, enters the first flow passage 16 through the air passing hole 20 of the lower positioning ring 5, flows in the first flow passage 16 and the second flow passage 17, is exhausted through the exhaust hole 18 in the upper valve seat 3, and the exhaust process runs through the working process of the diaphragm pump.

As shown in fig. 5, when the oil amount in the hydraulic chamber is insufficient, the oil is replenished through the exhaust oil replenishing valve for the diaphragm pump, and when the exhaust oil replenishing valve for the diaphragm pump of the present invention replenishes oil, pressure oil with a certain pressure flows in the oil passing hole 19 to push the active blocking ball 7 open, so that the oil passing hole 19 and the second flow path 17 are communicated, the pressure oil flows into the second flow path 17, the pressure oil flows in the first flow path 16 and the second flow path 17, and at this time, under the action of the membrane hose 31, the force transmission guide rod 30 is pushed to move, so that the valve opening jacking rod 29 is driven to rotate, the push rod 28 moves upwards, the push rod 28 penetrates through the oil supplementing hole 15 to push the driven blocking ball 6 open, the oil compensating hole 15 is communicated with the first flow passage 16, the pressure oil flows into the oil compensating hole 15 from the first flow passage 16, flows out from the oil compensating hole 15 and is charged into the hydraulic cavity, the oil compensation of the pressure oil from top to bottom is completed, and the oil compensation of the hydraulic cavity is completed.

The exhaust oil supplementing valve for the diaphragm pump can realize automatic oil supplementing of the diaphragm pump, so that the oil quantity in a hydraulic cavity of the diaphragm pump is basically constant, the normal operation of the diaphragm pump is ensured, and the operation reliability of the diaphragm pump is improved. The exhaust oil supplementing valve for the diaphragm pump is arranged on the oil supplementing disc, and can rapidly discharge gas in the cavity of the diaphragm pump, so that the gas accumulation phenomenon of the diaphragm pump is avoided, the problems of equipment vibration, damage of the diaphragm, reduction of conveying efficiency, disorder of conveying pressure and the like are avoided, the working performance of the diaphragm pump is in the best state, and the working reliability of the diaphragm pump is improved.

The exhaust oil supplementing valve for the diaphragm pump has the advantages of simple structure, low cost, convenience in installation and operation and strong practicability.