CN205036548U - Gear metering pump - Google Patents
Gear metering pump Download PDFInfo
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- CN205036548U CN205036548U CN201520739018.3U CN201520739018U CN205036548U CN 205036548 U CN205036548 U CN 205036548U CN 201520739018 U CN201520739018 U CN 201520739018U CN 205036548 U CN205036548 U CN 205036548U
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- bearing
- lubrication groove
- metering pump
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Abstract
The utility model discloses a gear metering pump, its pump body are provided with gear chamber, first lubrication groove and second lubrication groove, and a drive bearing, the 2nd drive bearing, first driven bearing and the driven bearing of second all are fixed in the both sides wall in gear chamber, and the non - drive end of drive shaft is fixed in in a drive bearing and the 2nd drive bearing to the non - drive end of a drive bearing and drive shaft all lies in the opening part of first lubrication groove, the one end of driven shaft is fixed in first driven bearing to the one end of first driven bearing and driven shaft all lies in the opening part of second lubrication groove, and driven gear and drive gear all lie in gear intracavity, driven gear and drive gear meshing. In this way, the utility model discloses can collect get into clearance and some fluid medium in the clearance between driven shaft and the driven bearing between drive shaft and the drive bearing through the lubrication groove, avoid it to influence other fluidic purity in returning the gear chamber, and then influence the fluidic characteristic.
Description
Technical field
The utility model relates to metering equipment technical field, particularly relates to a kind of gear wheel metering pump.
Background technique
Gear wheel metering pump is as delicate metering equipment, be widely used in the industries such as petrochemical industry, plastic industry, pharmaceutical products and food and drink, task is added in its metering being responsible for severe corrosive, toxic, high viscosity and high pressure medium in manufacturing process.
At present, gear wheel metering pump great majority are made up of a pair pitch wheel, and one of them is driving gear, and another one is driven gear, drive engagement to rotate, and leave less gap between gear and the housing of pump by driving gear.Because the machining accuracy of gear wheel metering pump is very high, no matter be therefore the tooth accuracy of gear, or gear and housing, the quality of fit of gear and tooth top all requires very high, therefore the rotary radial piston of gear wheel metering pump is certain, in other words, gear often revolves and turns around, the volume of the flowing medium of discharging is certain, therefore along with the rotating speed of adjustment gear wheel metering pump, gear wheel metering pump just can discharge the flowing medium of respective numbers, by calculating the rotating speed of gear wheel metering pump, thus obtains the flow of gear wheel metering pump.
According to the working principle of gear wheel metering pump, flowing medium is transported to except discharge port except through gear wheel metering pump, some flowing medium flows through through the gap of gear two side clearance and master and slave axle and bearing, objectively become the oiling agent of gear wheel metering pump, ensure that the stable operation of metering pump.But this part flowing medium is under the effect of gear transmission, and the high temperature caused owing to rubbing and the effect of extruding force, the fusion of meeting generating portion, forms extremely small nontransparent particle, cause this certain media transparency to decline.Under the mode of operation of routine, this part flowing medium can reenter in the fluid passage of former flowing medium, affects the purity of former flowing medium.In optical articles production technology, require very high to the raw-material degree of purity of optics, oiling agent is caused to reenter in raw materials with this mode of operation, thus measured transport pump is to combined mould, directly make product, will the optical characteristics of product be affected, and make Quality Down, can waste product be produced time serious, cause heavy losses.
Summary of the invention
The technical problem that the utility model mainly solves is to provide a kind of gear wheel metering pump, the segment fluid flow medium in the gap that enters between live axle and driving bearing and the gap between driven shaft and driven bearing can be collected by lubrication groove, avoid it to return in gear cavity the purity affecting other flowing mediums, and then affect the characteristic of flowing medium.
For solving the problems of the technologies described above, the technological scheme that the utility model adopts is: provide a kind of gear wheel metering pump, comprising: the pump housing, live axle, driven shaft, actuation gear, driven gear, the first driving bearing, the second driving bearing, the first driven bearing and the second driven bearing; The described pump housing is provided with gear cavity, the first lubrication groove and the second lubrication groove, described first driving bearing and the second driving bearing are individually fixed in the relative two side of described gear cavity, the anti-drive end of described live axle is fixed in the first driving bearing and the second driving bearing, and the anti-drive end of described first driving bearing and live axle is all positioned at the opening of described first lubrication groove, described actuation gear is fixed on described live axle, and described actuation gear is positioned at described gear cavity; Described first driven bearing is individually fixed in two side relative described in described gear cavity with the second driven bearing, described first driven bearing is fixed in one end of described driven shaft, and one end of described first driven bearing and driven shaft is all positioned at the opening of described second lubrication groove, the other end of described driven shaft is fixed on the second driven bearing, described driven gear is fixed on described driven shaft, and described driven gear is positioned at described gear cavity, described driven gear and actuation gear engagement.
Wherein, the described pump housing also comprises the 3rd lubrication groove, and the other end of described second driving bearing and live axle and the other end of the second driven bearing and driven shaft are positioned at the opening of described 3rd lubrication groove.
Wherein, the drive end of described live axle is provided with the first screw thread, and described second live axle is provided with the second screw thread, and described first screw thread and the second screw thread are spirally connected fixing, and described first screw thread is reverse thread.
Wherein, the described pump housing also arranges the first connecting passage, the second connecting passage, the 3rd connecting passage and lubricant drainage port;
Described first connecting passage is communicated with the second lubrication groove with the first lubrication groove respectively, described second connecting passage is communicated with the 3rd lubrication groove with the second lubrication groove respectively, wherein, described first lubrication groove, the first connecting passage, the second lubrication groove, the second connecting passage and the 3rd lubrication groove form lubricious passage; Described 3rd connecting passage is communicated with lubricant drainage port with lubricious passage respectively.
Wherein, described second connecting passage is the hollow hole of through described driven shaft.
Wherein, the described pump housing is also provided with material entrance and discharge port; Described gear cavity is divided into suction chamber and discharging chamber by described actuation gear and driven gear, and described suction chamber is communicated with material entrance, and described discharge port is communicated with described discharging chamber.
Wherein, described gear wheel metering pump also comprises left metal cover board and right metal cover board; Described left metal cover board and right metal cover board are individually fixed in the both sides of the described pump housing, and the drive end of described live axle passes from described right metal cover board.
Wherein, described gear wheel metering pump also comprises drive unit, and described drive unit is connected with the drive end of described live axle, for driving described drive shaft turns.
Wherein, the means of fixation between described left metal cover board and the pump housing and the means of fixation between right metal cover board and the pump housing are bolt and fix.
The beneficial effects of the utility model are: the situation being different from prior art, the utility model arranges the first lubrication groove and the second lubrication groove in the pump housing, and the anti-drive end of the first driving bearing and live axle is all positioned at the opening of the first lubrication groove, one end of first driven bearing and driven shaft is all positioned at the opening of the second lubrication groove, when gear wheel metering pump rotates the quantity delivered of also delicate metering flowing medium, the segment fluid flow medium entering the gap between live axle and the first driving bearing and the gap between driven shaft and the first driven bearing as oiling agent can enter the first lubrication groove and the second lubrication groove, the segment fluid flow medium in the gap that enters between live axle and the first driving bearing and the gap between driven shaft and the first driven bearing is collected by the first lubrication groove and the second lubrication groove, it is avoided to return in gear cavity the purity affecting other flowing mediums, and then affect the characteristic of flowing medium.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that in the utility model gear wheel metering pump mode of execution, right metal cover board is separated;
Fig. 2 is the schematic diagram that in the utility model gear wheel metering pump mode of execution, left metal cover board is separated;
Fig. 3 is the schematic diagram that the utility model gear wheel metering pump mode of execution partial cut cuts;
Fig. 4 is the schematic diagram of driven gear and actuation gear engagement in the utility model gear wheel metering pump mode of execution;
Fig. 5 is the flow schematic diagram as the flowing medium of oiling agent in the utility model gear wheel metering pump mode of execution.
Embodiment
Below in conjunction with drawings and embodiments, the utility model is described in detail.
Refer to Fig. 1 ~ Fig. 5, gear wheel metering pump 20 comprises the pump housing 21, live axle 22, driven shaft 23, actuation gear 24, driven gear 25, first driving bearing 26, second driving bearing 27, first driven bearing 28 and the second driven bearing 29.
The pump housing 21 is provided with gear cavity (sign), the first lubrication groove 211 and the second lubrication groove 212, first driving bearing 26 is individually fixed in the relative two side of gear cavity with the second driving bearing 27, the anti-drive end of live axle 22 is fixed in the first driving bearing 26 and the second driving bearing 27, and the anti-drive end of the first driving bearing 26 and live axle 22 is all positioned at the opening of the first lubrication groove 211, actuation gear 24 is fixed on live axle, and actuation gear 24 is positioned at gear cavity.First driven bearing 28 is individually fixed in the relative two side of gear cavity with the second driven bearing 29, the first driven bearing 28 is fixed in one end of driven shaft 23, and one end of the first driven bearing 28 and driven shaft 23 is all positioned at the opening of the second lubrication groove 212, the other end of driven shaft 23 is fixed on the second driven bearing 29, driven gear 25 is fixed on driven shaft 23, and driven gear 25 is positioned at gear cavity, driven gear 25 and actuation gear 24 engage.
When gear wheel metering pump 20 rotates the quantity delivered of also delicate metering flowing medium, segment fluid flow medium can enter the gap between live axle 22 and the first driving bearing 26, and, gap between driven shaft 23 and the first driven bearing 28, becomes between live axle 22 and the first driving bearing 26 and oiling agent between driven shaft 23 and the first driven bearing 28; Anti-drive end due to the first driving bearing 26 and live axle 22 is all positioned at the opening of the first lubrication groove 211, and, one end of first driven bearing 28 and driven shaft 23 is all positioned at the opening of the second lubrication groove 212, oiling agent can continue motion under stress, until enter the first lubrication groove 211 and the second lubrication groove 212, in brief, oiling agent is collected by the first lubrication groove 211 and the second lubrication groove 212, avoid lubricant back gear cavity, affect the purity of flowing medium.
When gear wheel metering pump 20 rotates the quantity delivered of also delicate metering flowing medium, also have segment fluid flow medium and can enter gap between live axle 22 and the second driving bearing 27, and, gap between driven shaft 23 and the second driven bearing 29, become between live axle 22 and the second driving bearing 27 and oiling agent between driven shaft 23 and the second driven bearing 29, in order to the oiling agent preventing from entering between live axle 22 and the second driving bearing 27 and between driven shaft 23 and the second driven bearing 29 returns in gear cavity, the pump housing 21 also comprises the 3rd lubrication groove 213, the other end of the second driven bearing 29 and driven shaft 23 is positioned at the opening of the 3rd lubrication groove 213, being collected by the 3rd lubrication groove 213 enters between live axle 22 and the second driving bearing 27 and the oiling agent of driven shaft 23 and the second driven bearing 29, it is avoided to return in gear cavity, affect the purity of the flowing medium of main passage product.Second driving bearing 27 is provided with reverse thread 271, wherein, reverse thread refers to that the sense of rotation of screw thread is contrary with the direction that live axle 22 rotates, when live axle 22 is walked around, reverse thread can produce an opposite force by propelling fluid medium, is pushed back in gear grooved by flowing medium.Certainly, in other alternate embodiments, the pump housing 21 also can arrange the 4th lubrication groove (sign), the second driving bearing is arranged at the opening of the 4th lubrication groove, is collected the flowing medium in the gap entered between driving shaft and the second driving bearing by the 4th lubrication groove.
Certainly, in other alternate embodiments, the drive end of live axle 22 also can not arrange the first screw thread 221, but the drive end of the second driving bearing 27 and live axle 22 is arranged at the opening of the 3rd lubrication groove 213, one end of second driven bearing 29 and driven shaft 23 is all arranged at the opening of the 3rd lubrication groove 213, when gear wheel metering pump 20 rotates the quantity delivered of also delicate metering flowing medium, gap between live axle 22 and the second driving bearing 27 is entered and between driven shaft 23 and the second driven bearing 29, the segment fluid flow medium in gap can enter the 3rd lubrication groove 213 as oiling agent, 3rd lubrication groove 213 collects the gap that enters between live axle 22 and the second driving bearing 27 and the segment fluid flow medium in gap between driven shaft 23 and the second driven bearing 29, it is avoided to return in gear cavity the purity affecting other flowing mediums, and then affect the characteristic of flowing medium.
Further, the pump housing 21 also arranges the first connecting passage 214, second connecting passage 215, the 3rd connecting passage 216 and lubricant drainage port 217.First connecting passage 214 is communicated with the second lubrication groove 212 with the first lubrication groove 211 respectively, second connecting passage 215 is communicated with the 3rd lubrication groove 213 with the second lubrication groove 212 respectively, wherein, first lubrication groove 211, first connecting passage 214, second lubrication groove 212, second connecting passage 215 and the 3rd lubrication groove 213 form lubricious passage, and the 3rd connecting passage 216 is communicated with lubricant drainage port 217 with lubricious passage respectively.The flowing medium that first lubrication groove 211, second lubrication groove 212 and the 3rd lubrication groove 213 are collected is exported by lubricant drainage port 217, when avoiding the flowing medium collected in the first lubrication groove 211, second lubrication groove 212 and the 3rd lubrication groove 213 too much, flowing medium returns in gear cavity.In the present embodiment, the second connecting passage 215 is the hollow hole of through driven shaft 23.
The pump housing 21 is also provided with material entrance 218 and discharge port (sign).Gear cavity is divided into suction chamber (sign) and discharging chamber (sign) by actuation gear 24 and driven gear 25, suction chamber and discharging chamber lay respectively at the both sides, front and back of actuation gear 24 and driven gear 25, suction chamber is communicated with material entrance 218, and discharge port is communicated with discharging chamber.Flowing medium enters in suction chamber by material entrance 218, then discharging chamber is transported to by actuation gear 24 and driven gear 25, finally export from discharge port, actuation gear 24 and driven gear 25 often rotate a circle, the amount of its flowing medium transported is substantially identical, therefore, by the output quantity of the rotation number of turns accurate Calculation flowing medium of actuation gear 24 and driven gear 25.
In order to protect the pump housing 21 better, gear wheel metering pump 20 also comprises left metal cover board 30 and right metal cover board 31.Left metal cover board 30 and right metal cover board 31 are individually fixed in the both sides of the pump housing 21, and the drive end of live axle 22 passes from right metal cover board 31.In the present embodiment, the means of fixation between left metal cover board 30 and the pump housing 21 and the means of fixation between right metal cover board 31 and the pump housing 21 are bolt and fix.
Gear wheel metering pump 20 also comprises drive unit (figure does not mark), and drive unit is connected with the drive end of live axle 22, rotates for driving live axle 22.
In the utility model mode of execution, first lubrication groove 211 and the second lubrication groove 212 is set in the pump housing 21, and the anti-drive end of the first driving bearing 26 and live axle 22 is all positioned at the opening of the first lubrication groove 211, one end of first driven bearing 28 and driven shaft 23 is all positioned at the opening of the second lubrication groove 212, when gear wheel metering pump 20 rotates the quantity delivered of also delicate metering flowing medium, the segment fluid flow medium entering the gap between live axle 22 and the first driving bearing 26 and the gap between driven shaft 23 and the first driven bearing 28 as oiling agent can enter the first lubrication groove 211 and the second lubrication groove 212, the segment fluid flow medium in the gap that enters between live axle and the first driving bearing 26 and the gap between driven shaft 23 and the first driven bearing 28 is collected by the first lubrication groove 211 and the second lubrication groove 212, it is avoided to return in gear cavity the purity affecting other flowing mediums, and then affect the characteristic of flowing medium.
The foregoing is only mode of execution of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model specification and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (9)
1. a gear wheel metering pump, is characterized in that, comprising: the pump housing, live axle, driven shaft, actuation gear, driven gear, the first driving bearing, the second driving bearing, the first driven bearing and the second driven bearing;
The described pump housing is provided with gear cavity, the first lubrication groove and the second lubrication groove, described first driving bearing and the second driving bearing are individually fixed in the relative two side of described gear cavity, the anti-drive end of described live axle is fixed in the first driving bearing and the second driving bearing, and the anti-drive end of described first driving bearing and live axle is all positioned at the opening of described first lubrication groove, described actuation gear is fixed on described live axle, and described actuation gear is positioned at described gear cavity;
Described first driven bearing is individually fixed in two side relative described in described gear cavity with the second driven bearing, described first driven bearing is fixed in one end of described driven shaft, and one end of described first driven bearing and driven shaft is all positioned at the opening of described second lubrication groove, the other end of described driven shaft is fixed on the second driven bearing, described driven gear is fixed on described driven shaft, and described driven gear is positioned at described gear cavity, described driven gear and actuation gear engagement.
2. gear wheel metering pump according to claim 1, is characterized in that,
The described pump housing also comprises the 3rd lubrication groove, and the other end of described second driven bearing and driven shaft is positioned at the opening of described 3rd lubrication groove.
3. gear wheel metering pump according to claim 2, is characterized in that,
Described second driving bearing is provided with reverse thread.
4. gear wheel metering pump according to claim 2, is characterized in that,
The described pump housing also arranges the first connecting passage, the second connecting passage, the 3rd connecting passage and lubricant drainage port;
Described first connecting passage is communicated with the second lubrication groove with the first lubrication groove respectively, described second connecting passage is communicated with the 3rd lubrication groove with the second lubrication groove respectively, wherein, described first lubrication groove, the first connecting passage, the second lubrication groove, the second connecting passage and the 3rd lubrication groove form lubricious passage;
Described 3rd connecting passage is communicated with lubricant drainage port with lubricious passage respectively.
5. gear wheel metering pump according to claim 4, is characterized in that,
Described second connecting passage is the hollow hole of through described driven shaft.
6. gear wheel metering pump according to claim 4, is characterized in that,
The described pump housing is also provided with material entrance and discharge port;
Described gear cavity is divided into suction chamber and discharging chamber by described actuation gear and driven gear, and described suction chamber is communicated with material entrance, and described discharge port is communicated with described discharging chamber.
7. gear wheel metering pump according to claim 2, is characterized in that,
Described gear wheel metering pump also comprises left metal cover board and right metal cover board;
Described left metal cover board and right metal cover board are individually fixed in the both sides of the described pump housing, and the drive end of described live axle passes from described right metal cover board.
8. gear wheel metering pump according to claim 6, is characterized in that,
Described gear wheel metering pump also comprises drive unit, and described drive unit is connected with the drive end of described live axle, for driving described drive shaft turns.
9. gear wheel metering pump according to claim 7, is characterized in that,
Means of fixation between described left metal cover board and the pump housing and the means of fixation between right metal cover board and the pump housing are bolt and fix.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520739018.3U CN205036548U (en) | 2015-09-22 | 2015-09-22 | Gear metering pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520739018.3U CN205036548U (en) | 2015-09-22 | 2015-09-22 | Gear metering pump |
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| Publication Number | Publication Date |
|---|---|
| CN205036548U true CN205036548U (en) | 2016-02-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520739018.3U Active CN205036548U (en) | 2015-09-22 | 2015-09-22 | Gear metering pump |
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| CN (1) | CN205036548U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134587A (en) * | 2015-09-22 | 2015-12-09 | 深圳市圣诺光电科技有限公司 | Gear metering pump |
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2015
- 2015-09-22 CN CN201520739018.3U patent/CN205036548U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134587A (en) * | 2015-09-22 | 2015-12-09 | 深圳市圣诺光电科技有限公司 | Gear metering pump |
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