CN205117838U - Pneumatics drive formula liquid suction device - Google Patents

Abstract

An air pressure-driven liquid suction and discharge device, including a housing, an air nozzle, a first valve and a second valve, the central hole of the housing has a three-stage stepped hole structure, the outer cylinder wall of the air nozzle has a three-stage stepped platform structure, and the housing It is connected with the air nozzle through threads, and the two are sealed by a sealing ring. There is a concave conical hole structure on the air nozzle, and a conical truncated structure is provided in the shell. The conical hole structure corresponds to the conical truncated structure. Cooperate, there is a ring-shaped conical gap between the two, and the cone angle ranges from 45° to 75°; there is a compressed air inlet on the shell, the first valve is connected to the compressed air inlet, and the second valve is connected to the compressed air inlet. The valve is connected to the center hole of the gas nozzle; a full-capacity anti-leakage component is installed at the lower hole of the shell center hole. The utility model realizes a brand-new liquid suction and discharge method, only uses compressed air as the power source of liquid transfer, improves the transfer safety of dangerous liquids, has no particle size requirements for the transfer of dirty liquids, and has a wider range of applicable liquid types wide.

Description

A pneumatically driven liquid suction and discharge device

technical field

The utility model belongs to the technical field of liquid material transportation, in particular to an air pressure-driven liquid suction and discharge device.

Background technique

In industrial production, there are no more than two ways to transport liquid substances, one is to transport liquid substances through liquid pumps, and the other is to transport them manually. The transfer of liquid substances through liquid pumps is a common and efficient transfer method in industrial production, while the manual transfer method is only suitable for the transfer of a small amount of liquid substances because of its relatively low transfer efficiency.

For some highly flammable and corrosive liquids, there is a certain degree of danger during their transfer, and these dangerous liquids also have a very high impact on the safety of the pump itself. Therefore, it is necessary to find a method that can improve A new transport method for the safety of hazardous liquid transport.

For some dirty liquid mixed with a large amount of particles, if the liquid pump is used for transport, the damage to the pump body will be very large. Once the particle size in the dirty liquid is too large, the liquid pump will no longer be suitable, and finally can only be forced to use artificial Therefore, it is necessary to find a new transport method for dirty liquids without particle size requirements.

Utility model content

Aiming at the problems existing in the prior art, the utility model provides an air pressure-driven liquid suction and discharge device, which can improve the safety of the transfer of dangerous liquids and has no granularity requirements for the transfer of dirty liquids.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a pneumatically driven liquid suction and discharge device, including a shell, an air nozzle, a first valve and a second valve, the shell adopts a cylindrical tube with openings at both ends Shaped structure, the central hole of the shell adopts a three-stage stepped hole structure. The apertures of the central hole from large to small are the large hole section, the middle hole section and the small hole section. Internal threads are provided on the inner wall of the shell of the large hole section. , a compressed air inlet is opened on the inner wall of the shell of the middle hole section, and the first valve is connected to the compressed air inlet; the air nozzle adopts a cylindrical structure with openings at both ends, and the outer surface of the air nozzle The cylinder wall adopts a three-stage stepped structure. The outer diameter of the outer cylinder wall from large to small is the large diameter section, the middle diameter section and the small diameter section. There are external threads on the outer wall of the gas nozzle in the large diameter section. The gas nozzle and the shell The body is connected through internal and external threads; the second valve is connected to the center hole of the gas nozzle in the large-diameter section; a first sealing ring is installed on the outer wall of the gas nozzle in the middle-diameter section, and the first sealing ring and The inner wall of the shell of the middle hole section matches; the outer wall of the gas nozzle of the small diameter section corresponds to the inner wall of the shell of the middle hole section, and there is a circumferential gap between the two, and the center hole of the air nozzle of the small diameter section is set It is a concave conical hole structure. A truncated conical structure is arranged on the transitional ladder platform between the middle hole section and the small hole section of the central hole of the housing. Correspondingly, there is an annular conical gap between the conical hole structure and the truncated conical structure; a second sealing ring is installed on the outer wall of the shell of the small hole section.

The cone angle of the conical hole structure is the same as that of the truncated cone structure, and the cone angle ranges from 45° to 75°.

Preferably, the taper angles of the conical hole structure and the truncated conical structure are both 60°.

A full-capacity anti-leakage assembly is installed at the orifice of the small hole section of the central hole of the shell. The full-capacity anti-leakage assembly includes a liquid-permeable sleeve and a buoyancy plug. The surface of the liquid-permeable sleeve is processed with Several liquid-permeable holes, the nozzle at the upper end of the liquid-permeable casing communicates with the small-hole section of the central hole of the shell, the nozzle at the lower end of the liquid-permeable casing is a closed end, the buoyancy plug is located in the liquid-permeable casing, and the buoyancy plug and The small hole section orifice of the housing central hole is corresponding.

A detachable connection is adopted between the full-capacity anti-leakage assembly and the housing.

The beneficial effects of the utility model:

Compared with the prior art, the utility model realizes a brand-new liquid suction and discharge method, only uses compressed air as the power source of liquid transfer, overcomes the disadvantages of the traditional liquid pump transfer process, and not only effectively improves the level of danger. The transfer of liquids is safe, and there is no particle size requirement for the transfer of dirty liquids, and the range of applicable liquids is wider.

Description of drawings

Fig. 1 is a schematic structural diagram of an air pressure-driven liquid suction and discharge device of the present invention;

Fig. 2 is a schematic diagram of the housing structure of the present utility model;

Fig. 3 is the structural representation of the gas nozzle of the utility model;

In the figure, 1—shell, 2—gas nozzle, 3—first valve, 4—second valve, 5—large hole section, 6—medium hole section, 7—small hole section, 8—compressed air inlet . , 17—the second sealing ring, 18—the liquid-permeable casing, 19—the buoyancy plug, 20—the liquid-permeable hole.

detailed description

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail.

As shown in Figures 1, 2, and 3, an air pressure-driven liquid suction and discharge device includes a housing 1, an air nozzle 2, a first valve 3 and a second valve 4. Cylindrical structure, the central hole of the shell 1 adopts a three-stage stepped hole structure, and the diameter of the central hole from large to small is the large hole section 5, the middle hole section 6 and the small hole section 7, and the shell of the large hole section 5 Internal threads are provided on the inner wall of the body 1, and a compressed air inlet 8 is opened on the inner wall of the shell 1 of the middle hole section 6, and the first valve 3 is connected to the compressed air inlet 8; the air nozzle 2 A cylindrical structure with openings at both ends is adopted, and the outer cylinder wall of the gas nozzle 2 adopts a three-stage stepped structure. The outer diameter of the outer cylinder wall from large to small is the large diameter section 9, the middle diameter section 10 and the small diameter section 11. , the outer wall of the gas nozzle 2 of the large-diameter section 9 is provided with external threads, and the gas nozzle 2 is connected with the housing 1 through internal and external threads; the second valve 4 is connected to the center hole of the gas nozzle 2 of the large-diameter section 9 On the orifice; the first sealing ring 12 is installed on the outer wall of the gas nozzle 2 of the middle diameter section 10, and the first sealing ring 12 is matched with the inner wall of the housing 1 of the middle hole section 6; the gas nozzle of the small diameter section 11 2 The outer wall corresponds to the inner wall of the shell 1 of the middle hole section 6, and there is an annular gap 13 between them, and the center hole of the gas nozzle 2 of the small diameter section 11 is set as a concave conical hole structure 14, the The middle hole section 6 and the small hole section 7 of the center hole of the housing 1 are provided with a truncated conical structure 15 on the transitional ladder platform, and the conical hole structure 14 of the gas nozzle 2 corresponds to the truncated cone structure 15 of the housing 1. An annular conical gap 16 is left between the conical hole structure 14 and the truncated conical structure member 15 ; a second sealing ring 17 is installed on the outer wall of the housing 1 of the small hole section 7 .

The cone angle of the conical hole structure 14 is the same as that of the truncated cone structure 15 , and the cone angle ranges from 45° to 75°.

As a preference, the cone angles of the conical hole structure 14 and the truncated cone structure 15 are both 60°. According to actual tests, when the cone angle is 60°, the best vacuum degree can be formed to ensure the maximum suction force.

In order to prevent the liquid storage container from over-absorbing and leaking when it is full, a full-capacity anti-leakage component is installed at the orifice of the small hole section 7 in the center hole of the housing 1. The discharge assembly includes a liquid-permeable sleeve 18 and a buoyancy plug 19. The surface of the liquid-permeable sleeve 18 is processed with a number of liquid-permeable holes 20. Connected to each other, the nozzle at the lower end of the liquid-permeable casing 18 is a closed end, and the buoyancy plug 19 is located in the liquid-permeable casing 18, and the buoyancy plug 19 corresponds to the aperture of the small hole section 7 of the central hole of the shell 1.

The full-capacity anti-leakage assembly is connected to the housing 1 in a detachable manner.

Below in conjunction with accompanying drawing, the one-time use process of the present utility model is illustrated:

Embodiment one

Use the suction and discharge device of the utility model to carry out the liquid suction operation. In the present embodiment, the liquid is aviation kerosene, the container is a special oil barrel for bearing aviation kerosene, and the pressure of the compressed air is 6MPa.

First, the utility model is installed in a bung mouth of the oil barrel, and a soft oil pipe is prepared, one end of the soft oil pipe is sealed and communicated with the other bung mouth of the oil barrel, and the other end of the soft oil pipe is inserted into an external oil source, and then the first Valve 3 communicates with the compressed air source on site.

Before the liquid suction operation, adjust the second valve 4 to the open position, and the first valve 3 is in the closed position; start the liquid suction operation, first start the compressed air source, then open the first valve 3, and the compressed air passes through the annular gap 13 in sequence and the ring-shaped tapered gap 16, and spray along the ring-shaped tapered gap 16 to the second valve 4, and finally be discharged by the second valve 4. During this process, the compressed air will be injected continuously through the ring-shaped tapered gap 16. A certain range of vacuum negative pressure area is formed behind the jet flow. With the formation of the vacuum negative pressure area, the air in the oil barrel will be continuously sucked out, so that a negative pressure environment is formed in the oil barrel. The external aviation kerosene can be continuously sucked into the oil drum.

As the aviation kerosene is continuously sucked into the oil barrel, the liquid level in the oil barrel will also continue to rise. When the aviation kerosene is about to reach full capacity, the buoyancy plug 19 in the full capacity anti-leakage assembly will also increase with the liquid level. When the aviation kerosene is nearly full, the rising buoyancy plug 19 will block the center hole of the shell 1. At this time, the buoyancy plug 19 will isolate the vacuum negative pressure area from the inner cavity of the oil drum, and the pressure in the oil drum will Return to normal, the oil absorption process is over, effectively preventing the leakage of aviation kerosene due to full capacity.

Embodiment two

Utilize the suction and discharge device of the utility model to carry out the liquid discharge operation. In this embodiment, the liquid is aviation kerosene, the container is a special oil barrel for carrying aviation kerosene, and the oil barrel is fully loaded with aviation kerosene, and the pressure of the compressed air is 6MPa.

Due to the oil discharge operation, the full-capacity anti-leakage assembly can be removed, and then the utility model is installed in one mouth of the oil barrel, and a conduit is inserted into the other mouth of the oil barrel, so that the lower end of the conduit is close to the bottom of the oil barrel At the bottom of the barrel, the upper end of the conduit is located above the mouth of the barrel, and the conduit and the mouth of the barrel are sealed.

Before the liquid discharge operation, adjust the second valve 4 to the closed position, and the first valve 3 is in the closed position; start the liquid discharge operation, first start the compressed air source, then open the first valve 3, and the compressed air passes through the annular gap 13 in turn And the ring tapered gap 16, and spray to the second valve 4 along the ring tapered gap 16, but, because the second valve 4 is in the closed state, the compressed air will be forced into the oil drum, so that the oil drum will form In a positive pressure environment, with the continuous discharge of compressed air, the aviation kerosene in the oil barrel will be continuously squeezed out of the oil barrel through the conduit under high pressure, thus realizing the purpose of continuous oil discharge.

The schemes in the embodiments are not intended to limit the patent protection scope of the present utility model, and all equivalent implementations or changes that do not deviate from the utility model are included in the patent scope of the present case.

Claims (5)

1. An air pressure-driven liquid suction and discharge device is characterized in that: it comprises a housing, an air nozzle, a first valve and a second valve, the housing adopts a cylindrical structure with openings at both ends, and the center of the housing The hole adopts a three-stage stepped hole structure. The diameter of the center hole is from large to small in order of large hole section, middle hole section and small hole section. Internal thread is provided on the inner wall of the shell of the large hole section, and the shell of the middle hole section There is a compressed air inlet on the inner wall, and the first valve is connected to the compressed air inlet; the gas nozzle adopts a cylindrical structure with openings at both ends, and the outer wall of the gas nozzle adopts a three-stage stepped platform Structure, the outer diameter of the outer cylinder wall from large to small is the large diameter section, the middle diameter section and the small diameter section, and the outer wall of the gas nozzle in the large diameter section is provided with external threads, and the gas nozzle and the shell are matched by internal and external threads connection; the second valve is connected to the center hole of the gas nozzle of the large diameter section; the first sealing ring is installed on the outer wall of the gas nozzle of the middle diameter section, and the first sealing ring is connected with the shell inner wall of the middle hole section Cooperate; the outer wall of the gas nozzle of the small diameter section corresponds to the inner wall of the shell of the middle hole section, and there is a circumferential gap between the two, and the central hole of the gas nozzle of the small diameter section is set as a concave conical hole structure , the middle hole section and the small hole section of the shell center hole are provided with a truncated conical structure on the transitional ladder platform, the conical hole structure of the gas nozzle corresponds to the conical truncated structure of the shell, and the conical hole structure and An annular conical gap is left between the truncated conical structural parts; a second sealing ring is installed on the shell outer wall of the small hole section. 2 . The air pressure-driven liquid suction and discharge device according to claim 1 , characterized in that: the cone angle of the conical hole structure is the same as that of the truncated cone structure, and the cone angle ranges from 45° to 75°. 3 . The air pressure driven liquid suction and discharge device according to claim 2 , wherein the cone angles of the conical hole structure and the truncated conical structure are both 60°. 4 . 4. The air pressure-driven liquid suction and discharge device according to claim 1, characterized in that: a full-capacity anti-leakage component is installed at the orifice of the small hole section of the central hole of the housing, and the full-capacity anti-leakage component The anti-leakage component includes a liquid-permeable sleeve and a buoyancy plug. The surface of the liquid-permeable sleeve is processed with a number of liquid-permeable holes. The nozzle at the lower end of the liquid casing is a closed end, and the buoyancy plug is located in the liquid-permeable casing, and the buoyancy plug is corresponding to the orifice of the small hole section of the central hole of the shell. 5 . The air pressure-driven liquid suction and discharge device according to claim 4 , wherein a detachable connection is adopted between the full-capacity anti-leakage component and the housing. 6 .