CN213711286U

CN213711286U - Sealing structure for diaphragm pump

Info

Publication number: CN213711286U
Application number: CN202022815916.6U
Authority: CN
Inventors: 苏琪皓
Original assignee: Suzhou Jiji Weikang Biotechnology Co ltd
Current assignee: Suzhou Jiji Weikang Biotechnology Co ltd
Priority date: 2020-11-30
Filing date: 2020-11-30
Publication date: 2021-07-16
Anticipated expiration: 2030-11-30

Abstract

The utility model discloses a seal structure for diaphragm pump, including the hydraulic cylinder body, the fixed connecting pipe that has cup jointed in front of hydraulic cylinder body, the one end of connecting pipe is provided with the first casing that bears, the first inner chamber that bears the casing is provided with first sealed spheroid, the other end of connecting pipe is provided with the second and bears the casing, the inner chamber that the casing was born to the second is provided with the sealed spheroid of second, the first top that bears the casing and the top that the casing was born to the second are provided with the closing plate, the bottom of closing plate is provided with connecting sleeve, connecting sleeve's inner chamber is provided with connecting screw, connecting sleeve inner chamber's top is provided with the. The utility model discloses utilize connecting screw's mode of setting up, connecting screw can produce an extrusion force to first sealed spheroid and the sealed spheroid of second under the effect of the screw thread lantern ring and spring to make first sealed spheroid and the sealed spheroid of second descend fast and seal it, thereby reduce the quantity of liquid reflux, improve its practicality.

Description

Sealing structure for diaphragm pump

Technical Field

The utility model relates to a seal structure field, in particular to seal structure for diaphragm pump.

Background

The diaphragm pump mainly comprises a transmission part and a diaphragm cylinder head, wherein the transmission part is a driving mechanism for driving a diaphragm to swing back, the transmission form of the diaphragm pump comprises mechanical transmission, hydraulic transmission, pneumatic transmission and the like, the application of the diaphragm pump is more extensive hydraulic transmission, the working part of the diaphragm pump mainly comprises a crank link mechanism, a plunger, a hydraulic cylinder, a diaphragm, a pump body, a suction valve, a discharge valve and the like, the working principle of the diaphragm pump is that the diaphragm is swung back and forth, the volume of a working chamber is changed to suck and discharge liquid under the limited flow of a ball valve, the ball valve in the diaphragm pump limits the flow of the liquid along the flow direction of the liquid, and when the viscous liquid is operated, the ball valve needs a certain time for sealing, so that a part of the liquid flows back to reduce the practical performance of the diaphragm pump.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a seal structure for diaphragm pump to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a seal structure for diaphragm pump, includes the hydraulic cylinder body, the fixed connecting pipe that has cup jointed in front of hydraulic cylinder body, the one end of connecting pipe is provided with the first casing that bears, the first inner chamber that bears the casing is provided with first sealed spheroid, the other end of connecting pipe is provided with the second and bears the casing, the inner chamber that the casing was born to the second is provided with the sealed spheroid of second, the top that the casing was born to the first top and the second of bearing the casing is provided with the closing plate, the bottom of closing plate is provided with connecting sleeve, connecting sleeve's inner chamber is provided with connecting screw, the top of connecting sleeve inner chamber is provided with the spring.

Preferably, the bottom of the connecting screw is fixedly connected with a positioning plate, the bottom of the positioning plate is fixedly connected with a rubber pad, and the bottom of the inner cavity of the first bearing shell and the bottom of the inner cavity of the second bearing shell are fixedly sleeved with sealing leather sleeves.

Preferably, the sliding grooves are formed in the two sides of the inner wall of the connecting sleeve, the outer wall of the connecting screw rod is in threaded sleeve connection with a threaded sleeve ring, the outer wall of the threaded sleeve ring is in sliding sleeve connection with the inner cavity of the connecting sleeve, and the threaded sleeve ring is located at the bottom of the spring.

Preferably, the outer wall of the threaded lantern ring is symmetrically and fixedly connected with a sliding block, the outer wall of the sliding block is in sliding sleeve connection with the inner cavity of the sliding groove, the outer wall of the connecting screw rod is in threaded sleeve connection with a positioning nut, and the top of the positioning nut is attached to the threaded lantern ring.

Preferably, the top of the outer wall of the connecting sleeve is fixedly connected with a connecting sleeve ring, the bottom of the connecting sleeve ring is provided with a plurality of connecting bolts in an annular array at equal intervals, and the connecting sleeve ring is fixedly connected with the sealing plate through the connecting bolts.

Preferably, the bottom fixedly connected with of closing plate seals up the leather packing, the top of closing plate is that the annular array equidistance is provided with a plurality of fixing bolt, two the closing plate all bears casing fixed connection with first bearing shell body and second through fixing bolt respectively.

The utility model discloses a technological effect and advantage:

(1) the utility model utilizes the arrangement mode of the connecting screw rod, and the connecting screw rod can generate an extrusion force to the first sealing ball body and the second sealing ball body under the action of the thread lantern ring and the spring, thereby leading the first sealing ball body and the second sealing ball body to rapidly descend to seal the sealing balls, reducing the quantity of liquid backflow and improving the practical performance thereof;

(2) the utility model discloses utilize the cooperation of the screw thread lantern ring and connecting screw to use, dismantle the closing plate and the connecting ring, just can take off the spring, not hard up set nut, relative screw thread lantern ring rotate connecting screw and change the relative initial position of screw rod to change paralysed effort to it, make it extrude the location to first sealed spheroid and the sealed spheroid of second according to the thick condition of gluing of different liquid, thereby improve its practicality once more.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of the front internal structure of the present invention.

Fig. 3 is an enlarged schematic view of a portion a in fig. 2 according to the present invention.

In the figure: 1. a hydraulic cylinder body; 2. a connecting pipe; 3. a first load-bearing housing; 4. a first sealing sphere; 5. a second load-bearing housing; 6. a second sealing sphere; 7. a sealing plate; 8. a connecting sleeve; 9. connecting a screw rod; 10. positioning a plate; 11. a rubber pad; 12. a chute; 13. a threaded collar; 14. a slider; 15. a spring; 16. positioning a nut; 17. a connecting lantern ring; 18. a connecting bolt; 19. sealing the leather pad; 20. and (5) fixing the bolt.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a sealing structure for a diaphragm pump as shown in figures 1-3, which comprises a hydraulic cylinder body 1, a connecting pipe 2 is fixedly sleeved on the front surface of the hydraulic cylinder body 1, both ends of the connecting pipe 2 are provided with flanges, both ends of the connecting pipe 2 are respectively fixedly connected with a first bearing shell 3 and a second bearing shell 5 through the flanges, one end of the connecting pipe 2 is provided with the first bearing shell 3, the inner cavity of the first bearing shell 3 is provided with a first sealing ball 4, the other end of the connecting pipe 2 is provided with the second bearing shell 5, the inner cavity of the second bearing shell 5 is provided with a second sealing ball 6, the top of the first bearing shell 3 and the top of the second bearing shell 5 are provided with sealing plates 7, the bottom of the sealing plates 7 is provided with a connecting sleeve 8, the inner cavity of the connecting sleeve 8 is provided with a connecting screw rod 9, the top of the inner cavity of, connecting screw 9's bottom fixedly connected with locating plate 10, the bottom fixedly connected with rubber pad 11 of locating plate 10, rubber pad 11 can be protected first sealed spheroid 4 and second sealed spheroid 6, avoid locating plate 10 to cause its wearing and tearing to break to its extrusion for a long time, the bottom of first bearing housing 3 inner chamber and the bottom of second bearing housing 5 inner chamber are all fixed the sealed leather sheath that has cup jointed, the sealed lantern ring can improve first sealed spheroid 4 and second sealed spheroid 6 respectively with first bearing housing 3 and second bearing housing 5 leakproofness.

Spout 12 has all been seted up to the both sides of connecting sleeve 8 inner wall, connecting screw 9's outer wall screw thread has cup jointed the screw thread lantern ring 13, the outer wall of screw thread lantern ring 13 slides with connecting sleeve 8's inner chamber and cup joints, screw thread lantern ring 13 is located the bottom of spring 15, the outer wall symmetry fixedly connected with slider 14 of screw thread lantern ring 13, slider 14's outer wall slides with the inner chamber of spout 12 and cup joints, connecting screw 9's outer wall screw thread has cup jointed set nut 16, set nut 16's top and screw thread lantern ring 13 are laminated mutually.

The top fixedly connected with of the outer wall of connecting sleeve 8 connects the lantern ring 17, the bottom of the lantern ring 17 is that the annular array equidistance is provided with a plurality of connecting bolt 18, not hard up connecting bolt 18 takes off connecting sleeve 8 and is convenient for change the position of connecting screw 9, thereby change the effort of spring 15, connecting sleeve ring 17 passes through connecting bolt 18 and closing plate 7 fixed connection, the bottom fixedly connected with of closing plate 7 seals up the leather packing 19, seal leather packing 19 can strengthen two closing plates 7 and bear the leakproofness of casing 5 with first bearing casing 3 and second respectively, the top of closing plate 7 is that the annular array equidistance is provided with a plurality of fixing bolt 20, two closing plates 7 all bear casing 5 fixed connection with first bearing casing 3 and second through fixing bolt 20 respectively.

The utility model discloses the theory of operation: when liquid is conveyed, firstly, the fixing bolt 20 at the top of the sealing plate 7 is loosened, the sealing plate 7 at the top of the first bearing shell 3 and the second bearing shell 5 is taken down, then the connecting bolt 18 is loosened, the connecting sleeve 8 is taken down, the connecting screw 9 is connected with the connecting sleeve 8 in a sliding mode, the threaded sleeve ring 13 and the positioning nut 16 are separated from the connecting sleeve 8, the positioning nut 16 is loosened, then the connecting screw 9 is rotated relative to the threaded sleeve ring 13, the position of the threaded sleeve ring 13 at the connecting screw 9 is changed, and therefore the position of the positioning plate 10 is lowered or raised at the same position of the spring 15, the acting force of the spring 15 on the first sealing ball 4 or the second sealing ball 6 can be changed, and the liquid is suitable for liquid transportation to generate buoyancy;

then the hydraulic cylinder body 1 works, attractive force is provided inside the connecting pipe 2, the second sealing ball body 6 descends under the action of the spring 15, the connecting screw rod 9, the positioning plate 10 and the rubber pad 11 to seal the second bearing shell 5, the first sealing ball body 4 ascends under the negative pressure state, liquid flows into the hydraulic cylinder body 1 through the first bearing shell 3 and the connecting pipe 2, when the hydraulic cylinder body 1 is extruded, the first sealing ball body 4 descends under the action of the spring 15, the connecting screw rod 9, the positioning plate 10 and the rubber pad 11 to seal the first bearing shell 3, and the ascending liquid of the second sealing ball body 6 is discharged, so that liquid transportation operation is repeated in a circulating mode.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. A sealing structure for a diaphragm pump comprises a hydraulic cylinder body (1) and is characterized in that, the front surface of the hydraulic cylinder body (1) is fixedly sleeved with a connecting pipe (2), one end of the connecting pipe (2) is provided with a first bearing shell (3), the inner cavity of the first bearing shell (3) is provided with a first sealing ball body (4), the other end of the connecting pipe (2) is provided with a second bearing shell (5), the inner cavity of the second bearing shell (5) is provided with a second sealing ball body (6), the top of the first bearing shell (3) and the top of the second bearing shell (5) are provided with sealing plates (7), the bottom of closing plate (7) is provided with connecting sleeve (8), the inner chamber of connecting sleeve (8) is provided with connecting screw (9), the top of connecting sleeve (8) inner chamber is provided with spring (15).

2. The seal structure for the diaphragm pump according to claim 1, wherein a positioning plate (10) is fixedly connected to the bottom of the connecting screw (9), a rubber pad (11) is fixedly connected to the bottom of the positioning plate (10), and a sealing leather sleeve is fixedly sleeved on the bottom of the inner cavity of the first bearing housing (3) and the bottom of the inner cavity of the second bearing housing (5).

3. The seal structure for the diaphragm pump according to claim 1, wherein sliding grooves (12) are formed in both sides of an inner wall of the connecting sleeve (8), a threaded collar (13) is sleeved on an outer wall of the connecting screw (9) in a threaded manner, an outer wall of the threaded collar (13) is slidably sleeved with an inner cavity of the connecting sleeve (8), and the threaded collar (13) is located at the bottom of the spring (15).

4. The seal structure for the diaphragm pump according to claim 3, wherein the outer wall of the threaded collar (13) is symmetrically and fixedly connected with a sliding block (14), the outer wall of the sliding block (14) is slidably sleeved with the inner cavity of the sliding groove (12), the outer wall of the connecting screw (9) is in threaded sleeve connection with a positioning nut (16), and the top of the positioning nut (16) is attached to the threaded collar (13).

5. The seal structure for the diaphragm pump according to claim 1, wherein a connecting collar (17) is fixedly connected to the top of the outer wall of the connecting sleeve (8), a plurality of connecting bolts (18) are equidistantly arranged on the bottom of the connecting collar (17) in an annular array, and the connecting collar (17) is fixedly connected with the seal plate (7) through the connecting bolts (18).

6. The seal structure for the diaphragm pump according to claim 1, wherein a seal leather gasket (19) is fixedly connected to the bottom of the seal plate (7), a plurality of fixing bolts (20) are equidistantly arranged on the top of the seal plate (7) in an annular array, and both of the seal plates (7) are fixedly connected to the first bearing shell (3) and the second bearing shell (5) through the fixing bolts (20).