CN204140344U - A kind of sealing configuration of diaphragm pump - Google Patents
A kind of sealing configuration of diaphragm pump Download PDFInfo
- Publication number
- CN204140344U CN204140344U CN201420552837.2U CN201420552837U CN204140344U CN 204140344 U CN204140344 U CN 204140344U CN 201420552837 U CN201420552837 U CN 201420552837U CN 204140344 U CN204140344 U CN 204140344U
- Authority
- CN
- China
- Prior art keywords
- chamber
- diaphragm
- sealing
- fluid chamber
- seal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Reciprocating Pumps (AREA)
Abstract
The utility model discloses a kind of sealing configuration of diaphragm pump, comprise fluid chamber, fluid chamber's support, chamber of septum and diaphragm and by fluid chamber, fluid chamber's support, the water-inlet cavity that chamber of septum and diaphragm are formed, hyperbaric chamber and compression chamber, hyperbaric chamber sealing configuration and the fluid chamber sealing configuration of interference fit is respectively arranged with between fluid chamber and chamber of septum, chamber of septum, double sealing structure is provided with between diaphragm and fluid chamber's support, double sealing structure comprises diaphragm structure sealing and diaphragm area sealing, diaphragm structure sealing is made up of chamber of septum and diaphragm, diaphragm area sealing is formed by diaphragm and fluid chamber's support, hyperbaric chamber sealing configuration, fluid chamber sealing configuration and double sealing structure realize inner sealing, the outer seal structure of interference fit is provided with between fluid chamber and fluid chamber's support.The sealing configuration of this diaphragm pump, achieving liquid between each chamber and pressure can not seepage and leaking outside mutually, effectively improves working efficiency and the working life of pump.
Description
Technical field
The utility model relates to diaphragm pump technical field, especially relates to a kind of sealing configuration of diaphragm pump.
Background technique
The operating conditions of diaphragm pump requires that it will have good sealability, should ensure can not produce water leakage phenomenon between each chamber, also will ensure can not produce pressure release between each chamber.But current diaphragm pump sealing configuration can not meet the requirement of preventing water leakage and anti-pressure release simultaneously, and existing sealing configuration sealability is also not ideal enough, diaphragm pump in long-play process, there will be leak, pressure release phenomenon, thus greatly reduce the working life of diaphragm pump.In order to solve the problems of the technologies described above, develop a kind of sealing configuration that simultaneously can meet preventing water leakage and anti-pressure release extremely urgent.
Chinese patent literature (the day for announcing: on July 1st, 2009, notification number: CN201265516Y) disclose a kind of sealing structure for membrane pump, comprise housing and the shell holder of the fastening installation of relative engagement, be provided with diaphragm between housing and shell holder, diaphragm is fitted with the soft material Sealing of at least one energy prepressing deformation amount.
Technique scheme utilizes the disposable solution of a soft material Sealing under high-pressure situations, and water leaks on motor end face from the hole of pump case internal leak housing and in shell holder.It makes pump head leakage region only in the junction from housing and shell holder, to avoid the problem of leaking towards shell holder internal holes direction; This Leakage prevention technological scheme can not thoroughly solve diaphragm pump and leak, the problem that working life is short.
Model utility content
The purpose of this utility model effectively can not solve diaphragm pump to leak the problem of pressure release to solve sealing configuration of the prior art, and provide one can carry out excellent sealing to pump head inside, realize between each chamber water-tight, the sealing configuration of the diaphragm pump of not pressure release.
The utility model realizes the technological scheme that its technical purpose adopts: a kind of sealing configuration of diaphragm pump, comprise fluid chamber, fluid chamber's support, chamber of septum and diaphragm and by fluid chamber, fluid chamber's support, the water-inlet cavity that chamber of septum and separate space sheet are formed, hyperbaric chamber and compression chamber, hyperbaric chamber sealing configuration and the fluid chamber sealing configuration of interference fit is respectively arranged with between described fluid chamber and chamber of septum, described chamber of septum, double sealing structure is provided with between diaphragm and fluid chamber's support, described double sealing structure comprises diaphragm structure sealing and diaphragm area sealing, described diaphragm structure sealing is made up of chamber of septum and diaphragm, described diaphragm area sealing is formed by diaphragm and fluid chamber's support, described hyperbaric chamber sealing configuration, fluid chamber sealing configuration and double sealing structure realize inner sealing, the outer seal structure of interference fit is provided with between described fluid chamber and fluid chamber's support.The sealing configuration of this diaphragm pump, by arranging hyperbaric chamber sealing configuration and the fluid seal structure of interference fit seal structure between fluid chamber and chamber of septum, thus make between hyperbaric chamber and fluid chamber, between fluid chamber and compression chamber and pump head outside, there is good sealability, ensure that liquid is merely able to enter into compression chamber from water-inlet cavity by inlet valve, and there will not be outside seepage, pressure release, and between hyperbaric chamber and fluid chamber, also there will not be seepage and pressure release, simultaneously, at chamber of septum, double sealing structure is provided with between diaphragm and fluid chamber's support, double sealing structure comprises diaphragm area sealing and diaphragm structure sealing, water-inlet cavity is made by double sealing structure, the liquid of compression chamber inside can not to machine operation area leakage, also can not pressure release, effectively can ensure motor, the normal work of pump, hyperbaric chamber sealing configuration, fluid seal structure and double sealing structure form internal seal structure, realize the sealing between each chamber in pump head inside, make between the inner each chamber of pump head water-tight, not pressure release, thus achieve the inner sealing of pump head.And in order to realize pump head inside liquid not externally leak or outside liquid can not enter in pump, be also provided with outer seal structure, outer seal structure is realized by interference fit seal structure between fluid chamber and fluid chamber's support.Due to the sealing configuration of this diaphragm pump; existing internal seal structure has outer seal structure again; both ensure that water-tight not pressure release between inner each chamber; also protect inside and outside pump head and mutually do not leak; effectively improve the work of pump and efficiency and working life, and sealing structure, reasonable in design; easy to make, good sealing effect.
As preferably, the hyperbaric chamber that described hyperbaric chamber sealing configuration comprises hyperbaric chamber sealed groove, be equipped with hyperbaric chamber sealed groove seals land and seal ring, described hyperbaric chamber sealed groove is arranged on chamber of septum, it is inner that described seal ring is arranged on hyperbaric chamber sealed groove, described hyperbaric chamber sealing land is arranged in fluid chamber, described hyperbaric chamber sealing land is plugged in hyperbaric chamber sealed groove inside and crimps with seal ring, and described hyperbaric chamber sealed groove and hyperbaric chamber sealing land carry out interference fit seal to seal ring.High pressure seal structure is arranged on the sealing configuration on fluid chamber and separate space room, by arranging high pressure sealing groove on chamber of septum, fluid chamber arranges high pressure sealing land, high pressure sealing groove and high pressure sealing land are equipped with and realize interference fit seal with seal ring, such sealing structure is effective, make both to there will not be leak of liquid between water-inlet cavity and hyperbaric chamber, also there will not be pressure release problem, there is anti-leak and anti-pressure release double action.
As preferably, described fluid chamber sealing configuration comprises fluid chamber closure gasket groove, fluid chamber seal convexity and seal ring, described fluid chamber closure gasket groove is arranged on fluid chamber inside and offers towards machine operation region direction, described fluid chamber seal convexity is arranged on chamber of septum, it is inner that described seal ring is arranged on fluid chamber closure gasket groove, and described fluid chamber seal convexity is pressed on seal ring and jointly carries out interference fit seal to seal ring with fluid chamber closure gasket groove.Fluid chamber sealing configuration is by the fluid chamber closure gasket groove be arranged in fluid chamber and the fluid chamber seal convexity be arranged on chamber of septum, fluid chamber closure gasket groove and fluid chamber seal convexity realize interference fit seal to seal ring, this fluid chamber sealing configuration achieves the excellent sealing to water-inlet cavity, make the liquid of water-inlet cavity inside can not to external leakage, compression chamber inside can only be flowed to by inlet valve, also make water-inlet cavity can not leak with portion's pressure.
As preferably, described diaphragm structure sealing comprises the diaphragm labyrinth seat be arranged on chamber of septum and the diaphragm labyrinth ring be arranged on diaphragm, and described diaphragm labyrinth seat mutually plugs interference fit seal with diaphragm labyrinth ring and is connected.Diaphragm seal structure is consisted of interference fit the diaphragm labyrinth seat on chamber of septum and the diaphragm labyrinth ring on diaphragm, and such structure makes the liquid of compression chamber inside and pressure to machine operation area leakage, can not ensure that the normal work of motor.
As preferably, described diaphragm area sealing is formed by bracket bosses and diaphragm interference fit, described bracket bosses is formed by the setting that radially extends internally of the supporting surface of fluid chamber's support, the length of described bracket bosses is greater than the width of chamber of septum upper diaphragm labyrinth seat surface, and described diaphragm is pressed on bracket bosses by the diaphragm labyrinth seat on chamber of septum.Diaphragm area sealing forms by being arranged on bracket bosses on fluid chamber's support and diaphragm and chamber of septum, bracket bosses makes diaphragm and fluid chamber's support form interference fit, feasible region seals, further reinforcement is carried out to diaphragm structure sealing, can compress in the more effective effective sealing region diaphragm seal section and outside seal circle, prevent the pressure release between the leakage of liquid and chamber further.
As preferably, outer seal structure comprises outside seal face, outside seal projection and outside seal groove, described outside seal face is arranged on fluid chamber and fluid chamber's support assorted end face, described outside seal projection externally sealing surface is extended to fluid chamber's holder orientation, described outside seal groove corresponds to outside seal face and outside seal projection is arranged, described outside seal groove inside is provided with outside seal circle, and described outside seal face, outside seal projection and outside seal groove carry out interference fit seal to outside seal ring.Outer seal structure is realized by the sealing configuration be arranged on fluid chamber and fluid chamber's support, realize interference seal by outside seal face, outside seal projection and outside seal groove to outside seal ring to coordinate, ensure that pump head internal liquid not to external leakage and the not inside seepage of outside liquid, ensure that the sealing to pressure simultaneously, realize not pressure release.
The beneficial effects of the utility model are: the sealing configuration of this diaphragm pump, by arranging the internal seal structure of interference fit between each chamber, realize the sealing between the inner each chamber of pump head, both ensure that liquid between each chamber can not seepage mutually, also ensure that between each chamber, pressure can not leak mutually, simultaneously, the outer seal structure of interference fit is set between fluid chamber and fluid chamber's support, realize pump head internal liquid and pressure can not to external leakage, also make outside liquid can not to pump head internal leak, effectively improve working efficiency and the working life of pump.The sealing configuration of this diaphragm pump, has dual functions, and structure is simple, easy to make, good sealing effect.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the sealing configuration of the utility model diaphragm pump;
Fig. 2 is B place enlarged view in Fig. 1;
In figure: 1, fluid chamber, 2, fluid chamber's support, 3, chamber of septum, 4, diaphragm, 5, water-inlet cavity, 6, hyperbaric chamber, 7, compression chamber, 8, hyperbaric chamber sealing configuration, 9, fluid chamber sealing configuration, 10, double sealing structure, 11, diaphragm structure seals, 12, diaphragm area seals, 13, outer seal structure, 14, hyperbaric chamber sealed groove, 15, hyperbaric chamber sealing land, 16, seal ring, 17, fluid chamber closure gasket groove, 18, fluid chamber seal convexity, 19, seal ring, 20, machine operation region, 21, diaphragm labyrinth seat, 22, diaphragm labyrinth ring, 23, bracket bosses, 24, outside seal face, 25, outside seal is protruding, 26, outside seal groove, 27, outside seal circle.
Embodiment
Also by reference to the accompanying drawings the technical solution of the utility model is described in further detail below by specific embodiment.
Embodiment 1:
In the embodiment shown in fig. 1, a kind of sealing configuration of diaphragm pump, comprise fluid chamber 1, fluid chamber's support 2, chamber of septum 3 and diaphragm 4 and by fluid chamber 1, fluid chamber's support 2, the water-inlet cavity 5 that chamber of septum 3 and separate space sheet 4 are formed, hyperbaric chamber 6 and compression chamber 7, hyperbaric chamber sealing configuration 8 and fluid chamber sealing configuration 9 is provided with between fluid chamber 1 and chamber of septum 3, hyperbaric chamber sealing configuration 8 and fluid chamber sealing configuration 9 are respectively interference fit seal structure, hyperbaric chamber sealing configuration 8 comprises hyperbaric chamber sealed groove 14, the hyperbaric chamber be equipped with hyperbaric chamber sealed groove 14 seals land 15 and seal ring 16, hyperbaric chamber sealed groove 14 is arranged on chamber of septum 3, it is inner that seal ring 16 is arranged on hyperbaric chamber sealed groove 14, hyperbaric chamber sealing land 15 is arranged in fluid chamber 1, hyperbaric chamber sealing land 15 is plugged in hyperbaric chamber sealed groove 14 inside and crimps with seal ring 16, hyperbaric chamber sealed groove 14 and hyperbaric chamber sealing land 15 pairs of seal rings 16 carry out interference fit seal.Fluid chamber sealing configuration 9 comprises fluid chamber closure gasket groove 17, fluid chamber seal convexity 18 and seal ring 19, fluid chamber closure gasket groove 17 is arranged on fluid chamber 1 inside and offers towards direction, machine operation region 20, fluid chamber seal convexity 18 is arranged on chamber of septum 3, it is inner that seal ring 19 is arranged on fluid chamber closure gasket groove 17, and fluid chamber seal convexity 18 is pressed on seal ring 19 and jointly carries out interference fit seal to seal ring 19 with fluid chamber closure gasket groove 17.
Chamber of septum 3, between diaphragm 4 and fluid chamber's support 2, be provided with double sealing structure 10, double sealing structure 10 comprises diaphragm structure sealing 11 and diaphragm area sealing 12, diaphragm structure sealing 11 is made up of chamber of septum 3 and diaphragm 4, diaphragm structure sealing 11 comprises the diaphragm labyrinth seat 21 be arranged on chamber of septum 3 and the diaphragm labyrinth ring 22 be arranged on diaphragm 4, and diaphragm labyrinth seat 21 and diaphragm labyrinth ring 22 mutually plug interference fit seal and be connected.Diaphragm area sealing 12 is formed by diaphragm 4 and fluid chamber's support 2, diaphragm area sealing 12 is formed by bracket bosses 23 and diaphragm 4 interference fit, bracket bosses 23 is formed by the setting that radially extends internally of the supporting surface of fluid chamber's support 2, the length of bracket bosses 23 is greater than the width of chamber of septum 3 upper diaphragm labyrinth seat surface, and diaphragm 4 is pressed on bracket bosses 23 by the diaphragm labyrinth seat 21 on chamber of septum 3.Hyperbaric chamber sealing configuration 8, fluid chamber sealing configuration 9 and double sealing structure 10 realize inner sealing.
The outer seal structure 13 of interference fit is provided with between fluid chamber 1 and fluid chamber's support 2.Outer seal structure 13 comprises outside seal face 24, outside seal protruding 25 and outside seal groove 26, outside seal face 24 is arranged on fluid chamber 1 with on fluid chamber's support 2 counterface, outside seal projection 25 externally sealing surface 24 is extended to fluid chamber's support 2 direction, outside seal groove 26 corresponds to outside seal face 24 and outside seal protruding 25 is arranged, outside seal groove 26 inside is provided with outside seal circle 27, and outside seal face 24, outside seal protruding 25 and outside seal groove 26 carry out interference fit seal to outside seal ring 27.
The sealing configuration of this diaphragm pump comprises internal seal structure and outer seal structure, the liquid (water) of water-inlet cavity 5 inside is by fluid chamber 1 and chamber of septum 3 pairs of seal ring 19 interference fit, thus make the liquid of water-inlet cavity 5 inside cannot outside seepage, pressure cannot be leaked, liquid can only enter compression chamber 7 by inlet valve, and the leakage proof of compression chamber 7 is realized by chamber of septum 3 and fluid chamber's support 5 pairs of diaphragm 4 interference fit.The leakage proof of hyperbaric chamber 6 carries out interference fit realization by fluid chamber 1 and chamber of septum 3 pairs of seal rings 16.Thus make to realize each chamber by these sealing configurations between the inner each chamber (water-inlet cavity, compression chamber and hyperbaric chamber) of pump head and do not seep water, also make each chamber can not pressure release.Thus realize the inner sealing of pump head.
Outer seal structure plays the effect of the anti-pressure release of outside water-inlet-proof, and outer seal structure carries out interference fit realization by fluid chamber 1 and fluid chamber's support 2 to outside sealing surface 24.And on fluid chamber's support, be provided with bracket bosses, can realize carrying out regional seal to diaphragm 4, make between diaphragm 4 and bracket bosses, to form larger effective sealing face A(and see Fig. 2), add upper diaphragm labyrinth seat 21 and diaphragm labyrinth ring 22 and mutually plug the diaphragm structure sealing that interference fit formed, so can effectively prevent liquid from entering to machine operation region, more effectively the diaphragm and outside seal circle that need hermetic unit can be compressed, feasible region seals.
The sealing configuration of this diaphragm pump, by arranging the internal seal structure of interference fit between each chamber, realize the sealing between the inner each chamber of pump head, both ensure that liquid between each chamber can not seepage mutually, also ensure that between each chamber, pressure can not leak mutually, simultaneously, the outer seal structure of interference fit is set between fluid chamber and fluid chamber's support, realize pump head internal liquid and pressure can not to external leakage, also outside liquid is made to pump head internal leak, can not effectively to improve working efficiency and the working life of pump.The sealing configuration of this diaphragm pump, has dual functions, and structure is simple, easy to make, good sealing effect.
Claims (6)
1. the sealing configuration of a diaphragm pump, comprise fluid chamber (1), fluid chamber's support (2), chamber of septum (3) and diaphragm (4) and by fluid chamber (1), fluid chamber's support (2), the water-inlet cavity (5) that chamber of septum (3) and separate space sheet (4) are formed, hyperbaric chamber (6) and compression chamber (7), it is characterized in that: the hyperbaric chamber sealing configuration (8) and the fluid chamber sealing configuration (9) that are respectively arranged with interference fit between described fluid chamber (1) and chamber of septum (3), described chamber of septum (3), double sealing structure (10) is provided with between diaphragm (4) and fluid chamber's support (2), described double sealing structure (10) comprises diaphragm structure sealing (11) and diaphragm area sealing (12), described diaphragm structure sealing (11) is made up of chamber of septum (3) and diaphragm (4), described diaphragm area sealing (12) is formed by diaphragm (4) and fluid chamber's support (2), described hyperbaric chamber sealing configuration (8), fluid chamber sealing configuration (9) and double sealing structure (10) realize inner sealing, the outer seal structure (13) of interference fit is provided with between described fluid chamber (1) and fluid chamber's support (2).
2. the sealing configuration of a kind of diaphragm pump according to claim 1, it is characterized in that: described hyperbaric chamber sealing configuration (8) comprises hyperbaric chamber sealed groove (14), the hyperbaric chamber be equipped with hyperbaric chamber sealed groove (14) seals land (15) and seal ring (16), described hyperbaric chamber sealed groove (14) is arranged on chamber of septum (3), it is inner that described seal ring (16) is arranged on hyperbaric chamber sealed groove (14), described hyperbaric chamber sealing land (15) is arranged in fluid chamber (1), described hyperbaric chamber sealing land (15) is plugged in hyperbaric chamber sealed groove (14) inside and crimps with seal ring (16), described hyperbaric chamber sealed groove (14) and hyperbaric chamber sealing land (15) carry out interference fit seal to seal ring (16).
3. the sealing configuration of a kind of diaphragm pump according to claim 1, it is characterized in that: described fluid chamber sealing configuration (9) comprises fluid chamber closure gasket groove (17), fluid chamber seal convexity (18) and seal ring (19), described fluid chamber closure gasket groove (17) is arranged on fluid chamber (1) inside and offers towards machine operation region (20) direction, described fluid chamber seal convexity (18) is arranged on chamber of septum (3), it is inner that described seal ring (19) is arranged on fluid chamber closure gasket groove (17), described fluid chamber seal convexity (18) is pressed on seal ring (19) and fluid chamber closure gasket groove (17) carries out interference fit seal to seal ring (19) jointly.
4. the sealing configuration of a kind of diaphragm pump according to claim 1, it is characterized in that: described diaphragm structure sealing (11) comprises diaphragm labyrinth seat (21) be arranged on chamber of septum (3) and the diaphragm labyrinth ring (22) be arranged on diaphragm (4), and described diaphragm labyrinth seat (21) mutually plugs interference fit seal with diaphragm labyrinth ring (22) and is connected.
5. the sealing configuration of a kind of diaphragm pump according to claim 4, it is characterized in that: described diaphragm area sealing (12) is formed by bracket bosses (23) and diaphragm (4) interference fit, described bracket bosses (23) is formed by the setting that radially extends internally of the supporting surface of fluid chamber's support (2), the length of described bracket bosses (23) is greater than the width of chamber of septum (3) upper diaphragm labyrinth seat surface, and described diaphragm (4) is pressed on bracket bosses (23) by diaphragm labyrinth seat (21) on chamber of septum (3).
6. the sealing configuration of a kind of diaphragm pump according to claim 1 or 2 or 3 or 4 or 5, it is characterized in that: outer seal structure (13) comprises outside seal face (24), outside seal projection (25) and outside seal groove (26), described outside seal face (24) is arranged on the end face that fluid chamber (1) matches with fluid chamber's support (2), described outside seal projection (25) externally sealing surface (24) is extended to fluid chamber's support (2) direction, described outside seal groove (26) is arranged corresponding to outside seal face (24) and outside seal projection (25), described outside seal groove (26) inside is provided with outside seal circle (27), described outside seal face (24), outside seal projection (25) and outside seal groove (26) carry out interference fit seal to outside seal ring (27).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420552837.2U CN204140344U (en) | 2014-09-25 | 2014-09-25 | A kind of sealing configuration of diaphragm pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420552837.2U CN204140344U (en) | 2014-09-25 | 2014-09-25 | A kind of sealing configuration of diaphragm pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204140344U true CN204140344U (en) | 2015-02-04 |
Family
ID=52417034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420552837.2U Active CN204140344U (en) | 2014-09-25 | 2014-09-25 | A kind of sealing configuration of diaphragm pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204140344U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179211A (en) * | 2015-08-25 | 2015-12-23 | 李喆 | Reinforced sealing structure for working water cavity of reverse osmosis booster pump |
| CN105715535A (en) * | 2016-04-13 | 2016-06-29 | 宁波佳音机电科技股份有限公司 | Water inlet/outlet valve body for stabilized pressure pump |
| CN108266354A (en) * | 2017-01-04 | 2018-07-10 | 佛山市顺德区美的饮水机制造有限公司 | Diaphragm pump and water treatment facilities |
-
2014
- 2014-09-25 CN CN201420552837.2U patent/CN204140344U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179211A (en) * | 2015-08-25 | 2015-12-23 | 李喆 | Reinforced sealing structure for working water cavity of reverse osmosis booster pump |
| CN105715535A (en) * | 2016-04-13 | 2016-06-29 | 宁波佳音机电科技股份有限公司 | Water inlet/outlet valve body for stabilized pressure pump |
| CN108266354A (en) * | 2017-01-04 | 2018-07-10 | 佛山市顺德区美的饮水机制造有限公司 | Diaphragm pump and water treatment facilities |
| CN108266354B (en) * | 2017-01-04 | 2019-09-20 | 佛山市顺德区美的饮水机制造有限公司 | Diaphragm pump and water treatment facilities |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204140344U (en) | A kind of sealing configuration of diaphragm pump | |
| CN216477779U (en) | Diaphragm compressor cylinder sealing structure, compression cylinder and diaphragm compressor | |
| CN201535238U (en) | Pump head of positive displacement pump | |
| CN105736331A (en) | Pressure stabilizing pump | |
| CN205533127U (en) | Diaphragm pump piston seal structure | |
| CN204126857U (en) | A kind of sealing configuration of diaphragm of diaphragm pump | |
| CN105508611A (en) | Stuffing sealing structure and plunger pump with same | |
| CN201521641U (en) | Efficient carbon ring sealing device | |
| CN212251594U (en) | Gas circuit sealing gasket mounting structure | |
| CN205714689U (en) | Membrane pump and water purifier | |
| CN215673595U (en) | Sealing element for hydrogen circulating pump | |
| CN218953547U (en) | Sealing structure between pump body water inlet joint and pump body water outlet joint | |
| CN214661252U (en) | Oil return filter element with double-sealing structure | |
| CN219606013U (en) | High-pressure combined sealing ring | |
| CN210978715U (en) | Mechanical sealing device for leakage prevention of pump valve | |
| CN217207726U (en) | Floating oil seal abrasion compensation structure | |
| CN212130762U (en) | Novel combined stuffing box for high-speed pump | |
| CN214007663U (en) | Device for realizing air inlet and outlet at bottom of air cylinder through internal structure of air cylinder body | |
| CN203547956U (en) | External side lug type air cylinder cushion structure | |
| CN204357675U (en) | A kind of waterproof construction of diaphragm pump | |
| CN203441756U (en) | Multilevel horizontal split pump | |
| CN214036071U (en) | Reciprocating type water injection pump oil blocking head | |
| CN207660807U (en) | A kind of leakage-preventing diaphragm booster water pump of encryption | |
| CN211144781U (en) | Water pump with good sealing effect | |
| CN210218776U (en) | Reverse sealing automatic compensation eccentric half ball valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |