CN203189821U - Internally-installed return valve of self-priming pump - Google Patents
Internally-installed return valve of self-priming pump Download PDFInfo
- Publication number
- CN203189821U CN203189821U CN 201320191525 CN201320191525U CN203189821U CN 203189821 U CN203189821 U CN 203189821U CN 201320191525 CN201320191525 CN 201320191525 CN 201320191525 U CN201320191525 U CN 201320191525U CN 203189821 U CN203189821 U CN 203189821U
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- valve
- self
- priming pump
- valve plug
- tube
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Abstract
The utility model discloses an internally-installed return valve of a self-priming pump. The internally-installed return valve of the self-priming pump comprises a valve plug, a spring, a sealing ring, a sleeve tube, a valve body, a gasket, a limiting lug, an elector rod and a valve cover. The radial outer wall of the blind end of the valve plug is a taper circular bead and is provided with the sealing ring in an embedded mode. The sleeve tube is axially and fixedly connected in the middle of the inner end face of the valve plug, the spring and the gasket are internally arranged in the sleeve tube, and the limiting lug is arranged at the other end of the sleeve tube. A through hole in the upper portion of the left side of the valve body faces and is matched with a reflowing hole of a water outlet cavity of the self-priming pump, the two sides of the bottom of the valve body are respectively provided with an outward-protruding tube, the outward-protruding tubes are coaxial, a circular bead is internally arranged in the right-installed outward-protruding tube, threads are externally arranged on the right-installed outward-protruding tube, the left-installed outward-protruding tube faces and is matched with a connector of a water inlet cavity of the self-priming pump, and the mouths of the outward-protruding tubes are taper holes and form a valve control structure with the matched valve plug. The valve cover is screwed on the right-installed outward-protruding tube of the valve body to form a spiral type axial regulating structure, and the valve cover is screwed to drive the capacity, for setting the anti-axial-thrust of the valve plug 1, of the ejector rod, the gasket and the spring. The internally-installed return valve uses pressure for controlling the movement of the valve plug, the fact that on-off of reflowing water is automatically controller is achieved, and the operating efficiency of the self-priming pump is greatly improved.
Description
Technical field
The utility model relates to a kind of valve, a kind of reflux valve that is placed in return port place in the self-priming pump particularly, this valve by the pump internal pressure automatically control open or close.
Background technique
Must be through former water filling circulation and gas-liquid separation process after a while when common self-priming pump starts, the return port in the pump is the original annotation water circulation channel.The built-in return port of the self-priming pump of prior art is through hole, water chamber is in malleation after self-priming pump is realized self-priming, water-inlet cavity is in negative pressure, and water chamber has part water to flow back to water-inlet cavity under the effect of pressure from return port, and the invalid shunting of this part water directly reduces pump operation efficient.In order to remove the built-in return port of self-priming pump problem of unimpeded shunting still after self-priming, it is a kind of effectively technical measures that the industry is settled reflux valve at return port.At present, the reflux valve that is applied in the engineering mainly contains two kinds of typical structures, and a kind of is the reflux valve of manual ball valve structure, and another kind is the reflux valve of float cut-off valve arrangement.Although before a kind of reflux valve simple in structure, close tight, switch freely, all want manually to open earlier but start self-priming pump at every turn, manual-lock again behind the self-priming to be achieved, the reflux valve of this structure is except the very important person is on duty, can't realize telecontrol, not meet the supporting requirement of modern ships.The reflux valve of stop valve structure can be realized switch automatically with the pressure difference of water chamber and water-inlet cavity when self-priming pump moves, the spool of this type of reflux valve adopts the rubber material manufacturing with spring-back force, to satisfy the requirement moving with pressure.Because rubber material is easily aging, manufacturing process complexity, reliability are not high, leakage problem in aging back easily takes place.
The model utility content
The utility model is primarily aimed at the deficiencies in the prior art, a kind of built-in reflux valve of self-priming pump by the pressure difference automatic control switch between water chamber and the water-inlet cavity is proposed, this valve arrangement is simple, easy for installation, is active in one's movements, reliably, fully, meets the remote control technology condition.
The utility model is achieved through the following technical solutions technical goal.
Self-priming pump is provided reflux valve for oneself, and it comprises valve plug, spring, seal ring, sleeve pipe, valve body, pad, position-limiting ear, push rod and valve gap.Its improvements are: described valve plug is the blind pipe structure, uniform 2～4 windows on the tube wall, and the cecum radial outer wall is the tapering shoulder, seal ring is embedded in the groove of tapering shoulder.Described sleeve pipe is straight tube, and an end axial restraint is connected valve plug interior edge face middle part, lays spring and pad in the sleeve pipe successively, and the sleeve pipe right-hand member is provided with position-limiting ear and is used for axial limiting.Described valve body is a kind of three-way body, be positioned at the through hole on left surface top in the face of the return port of supporting self-priming pump water chamber, the two bottom sides face is respectively equipped with coaxial projecting tube, the right side is put and is established shoulder peripheral hardware screw thread in the projecting tube, projecting tube is put in the face of supporting self-priming pump water-inlet cavity interface in a left side, and this projecting tube oral area is that taper hole is formed the valve control structure with the valve plug that matches.The fixedly connected push rod of described valve gap, valve gap are spun on and constitute spiral axial adjustment structure on the projecting tube of valve body right flank, change the ability that amount of spring compression is set the anti-end thrust of valve plug by increase and decrease pad quantity.
In the said structure, the window on the valve plug tube wall is rectangle, and the window limit starts from the cecum interior edge face, and it is long-pending that the window gross area equals the valve plug inner hole section.Spring is pressure spring.
The utility model compared with prior art has following good effect:
1, utilize the pressure difference control valve plug action of supporting self-priming pump water chamber and water-inlet cavity, valve plug is the mobile stop valve structure of forming in valve body, and the pressure drive mechanism is simple, flexible movements, and sealing is tight;
2, use pressure controlled reflux valve, do not need manually on dutyly, meet the remote control technology condition;
3, do not have invalid backflow in the pump, improve operational efficiency.
Description of drawings
Fig. 1 is the utility model structural profile schematic representation.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is that Fig. 1 is installed in the embodiment's schematic representation in the self-priming pump.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, the utility model is described in further detail.
Self-priming pump shown in Figure 1 is provided reflux valve for oneself, and it comprises valve plug 1, spring 2, seal ring 3, sleeve pipe 4, valve body 5, pad 6, position-limiting ear 7, push rod 8 and valve gap 9.Described valve plug 1 is the pipe that an end blocks, and it is long-pending that uniform two rectangular windows 1.1 as shown in Figure 2 on the tube wall of this kind blind pipe member, the window gross area equal valve plug 1 inner hole section.The cecum radial outer wall of valve plug 1 is the tapering shoulder, and seal ring 3 is embedded in the groove of tapering shoulder.Described sleeve pipe 4 is straight tube, and an end axial restraint is connected valve plug 1 interior edge face middle part, lays pressure spring 2 and pad 6 in the sleeve pipe 4 successively, and sleeve pipe 4 right-hand members are provided with position-limiting ear 7 and are used for axial limiting, the not slippage from valve body 5 of restriction valve plug 1.Described valve body 5 is a kind of threeway rectangular case, be positioned at the through hole on left surface top in the face of the return port of supporting self-priming pump water chamber, the two bottom sides face is respectively equipped with coaxial projecting tube, the right side is put and is established shoulder peripheral hardware screw thread in the projecting tube, projecting tube is put in the face of supporting self-priming pump water-inlet cavity interface in a left side, and this projecting tube oral area is that taper hole is formed the valve control structure of often opening with the valve plug 1 that matches.Described valve gap 9 built-in tapped holes and the push rod 8 of fixedlying connected, valve gap 9 are spun on and constitute spiral axial adjustment structure on the projecting tube of valve body 5 right flanks, change the ability that springs 2 decrements are set valve plug 1 anti-end thrust by increase and decrease pad 6.Supporting self-priming pump lift is 35m in the present embodiment, and the axial adjustment position that built-in three pads 6 are just decided push rod 8 screws the position that valve gap 9 is set valve plug 1 final plant closure then.
Fig. 3 is that the utility model is installed to the embodiment's schematic representation in the supporting self-priming pump, in self-priming pump, inject water earlier before starting for the first time, the start up period pump press in the water cavity less, it acts on power on the valve plug 1 less than pressure spring 2 tension force, valve plug 1 was in valve body 5 and often opened shape this moment, current enter valve body 5 from the window of valve plug 1, pump water cavity and communicate with water-inlet cavity.The water section of pump impeller output is back to water-inlet cavity, with enter impeller again after air mixes in the water-inlet cavity and be output to water chamber, circulation and synchronous gas-liquid separation repeatedly through a period of time, impel self-priming pump water-inlet cavity formation negative pressure and be full of water, water chamber pressure was set up rapidly after this moment, self-priming pump was realized self-priming.Press to surpass the value of setting valve plug 1 anti-end thrust in pumping water cavity, in the valve plug 1 indentation valve body 5 left side projecting tubes, formation is sealed and matched by valve plug 1 radial outer wall and valve body 5 oral area tapered holes, blocks the return flow line.Owing to during self-priming pump runs well, do not have invalid backflow, improve the operational efficiency of pump greatly.
Number of windows in the utility model on valve plug 1 tube wall is determined according to specification, does not surpass 4 at most, and it is long-pending that the window gross area equals valve plug 1 inner hole section, and its effect is similar with above-mentioned embodiment.Number of windows is too much unsuitable, otherwise can reduce the structural strength of valve plug 1 and the quality that is slidingly matched.
Claims (3)
1. a self-priming pump is provided reflux valve for oneself, and it comprises valve plug (1), spring (2), seal ring (3), sleeve pipe (4), valve body (5), pad (6), position-limiting ear (7), push rod (8) and valve gap (9); It is characterized in that: described valve plug (1) is the blind pipe structure, uniform 2～4 windows (1.1) on the tube wall, and the cecum radial outer wall is the tapering shoulder, seal ring (3) is embedded in the groove of tapering shoulder; Described sleeve pipe (4) is straight tube, and an end axial restraint is connected valve plug (1) interior edge face middle part, lays spring (2) and pad (6) in the sleeve pipe (4) successively, and sleeve pipe (4) right-hand member is provided with position-limiting ear (7) and is used for axial limiting; Described valve body (5) is a kind of three-way body, be positioned at the through hole on left surface top in the face of the return port of supporting self-priming pump water chamber, the two bottom sides face is respectively equipped with coaxial projecting tube, the right side is put and is established shoulder peripheral hardware screw thread in the projecting tube, projecting tube is put in the face of supporting self-priming pump water-inlet cavity interface in a left side, and this projecting tube oral area is that taper hole is formed the valve control structure with the valve plug that matches (1); The fixedly connected push rod of described valve gap (9) (8), valve gap (9) is spun on and constitutes spiral axial adjustment structure on the projecting tube of valve body (5) right flank, changes the ability that spring (2) decrement is set the anti-end thrust of valve plug (1) by increase and decrease pad (6) quantity.
2. self-priming pump according to claim 1 is provided reflux valve for oneself, it is characterized in that: the window on described valve plug (1) tube wall is rectangle, and the window limit starts from the cecum interior edge face, and it is long-pending that the window gross area equals valve plug (1) inner hole section.
3. self-priming pump according to claim 1 is provided reflux valve for oneself, it is characterized in that: described spring (2) is pressure spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320191525 CN203189821U (en) | 2013-04-17 | 2013-04-17 | Internally-installed return valve of self-priming pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320191525 CN203189821U (en) | 2013-04-17 | 2013-04-17 | Internally-installed return valve of self-priming pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203189821U true CN203189821U (en) | 2013-09-11 |
Family
ID=49106681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320191525 Withdrawn - After Issue CN203189821U (en) | 2013-04-17 | 2013-04-17 | Internally-installed return valve of self-priming pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203189821U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103195735A (en) * | 2013-04-17 | 2013-07-10 | 江苏振华泵业制造有限公司 | Internal reflux valve for self-priming pump |
-
2013
- 2013-04-17 CN CN 201320191525 patent/CN203189821U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103195735A (en) * | 2013-04-17 | 2013-07-10 | 江苏振华泵业制造有限公司 | Internal reflux valve for self-priming pump |
| CN103195735B (en) * | 2013-04-17 | 2015-05-20 | 江苏振华泵业制造有限公司 | Internal reflux valve for self-priming pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130911 Effective date of abandoning: 20150520 |
|
| RGAV | Abandon patent right to avoid regrant |