CN210623400U - High-efficient eccentric bearing structure of measuring pump and measuring pump - Google Patents
High-efficient eccentric bearing structure of measuring pump and measuring pump Download PDFInfo
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- CN210623400U CN210623400U CN201921537724.4U CN201921537724U CN210623400U CN 210623400 U CN210623400 U CN 210623400U CN 201921537724 U CN201921537724 U CN 201921537724U CN 210623400 U CN210623400 U CN 210623400U
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Abstract
The utility model provides a high-efficient eccentric bearing structure of measuring pump and measuring pump relates to measuring pump technical field, has solved among the prior art in order to guarantee eccentric supporting mechanism eccentric wheel axis and the straightness's that hangs down requirement of motor fitting surface, to the high technical problem of box required precision. The supporting structure comprises a main bearing, an upper supporting bearing, a box body, a self-aligning bearing and an eccentric shaft, wherein a self-aligning bearing groove is formed in the bottom of the box body, the self-aligning bearing is sleeved on the lower portion of the eccentric shaft and is installed in the self-aligning bearing groove, the upper supporting bearing is sleeved on the upper portion of the eccentric shaft, the main bearing is installed in the middle of the eccentric shaft, and the self-aligning bearing is arranged at the bottom of the box body; because self-aligning bearing can adjust in certain extent, the change of main shaft center can carry out self-regulation through self-aligning bearing, has reduced the wearing and tearing of bearing.
Description
Technical Field
The utility model belongs to the technical field of the measuring pump technique and specifically relates to a high-efficient eccentric bearing structure of measuring pump is related to.
Background
The metering pump is also called a quantitative pump or a proportional pump, and belongs to a reciprocating displacement pump. The structure of the device is generally divided into a driving part, an adjusting part, a mechanical transmission part and a liquid passing part. Wherein the mechanical transmission part can convert the rotary motion of the motor into linear motion, thereby leading the ejector rod driving the diaphragm to reciprocate back and forth, and further completing the reciprocating motion of the diaphragm to complete the function of the metering pump.
The mechanical transmission part for the metering pump on the market generally uses an eccentric wheel, a piston rod is matched to form an eccentric slide rod mechanism, and a reciprocating stroke is adjusted through an eccentric adjustable mechanism so as to achieve the purpose of adjusting the flow. The existing transmission mechanism usually uses a straight gear speed reducing motor to directly drive an eccentric wheel, but the bearing support is needed to be used in front and at the back of the eccentric wheel, so that the requirement on the verticality of the axis of the eccentric wheel and the matching surface of the motor is high, and great difficulty is brought to processing. And because the eccentric wheel is stressed by a large radial force, the bearing is seriously abraded once the axis of the supporting bearing is not concentric with the axis of the eccentric wheel, the efficiency is reduced, the bearing is quickly failed, and the metering pump is damaged.
The applicant has found that the prior art has at least the following technical problems:
the existing transmission mechanism usually uses a straight gear speed reducing motor to directly drive an eccentric wheel, but the bearing support is needed to be used in front and at the back of the eccentric wheel, so that the requirement on the verticality of the axis of the eccentric wheel and the matching surface of the motor is high, and great difficulty is brought to processing. And because the eccentric wheel is stressed by a large radial force, the efficiency is reduced once the supporting bearing and the eccentric wheel are not in concentric bearing abrasion, the bearing is in failure quickly, and the metering pump is damaged.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a high-efficient eccentric bearing structure of measuring pump and measuring pump to solve the requirement that exists among the prior art for guaranteeing measuring pump eccentric supporting mechanism eccentric wheel axis and the motor fitting surface straightness that hangs down, to the high technical problem of box required precision. The utility model provides a plurality of technical effects that preferred technical scheme among a great deal of technical scheme can produce see the explanation below in detail.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the utility model provides a high-efficient eccentric bearing structure of measuring pump, including the base bearing, go up support bearing and box, still include aligning bearing and eccentric shaft, the aligning bearing groove has been seted up to the bottom half, the aligning bearing cover is located the lower part of eccentric shaft and install in the aligning bearing inslot, it locates to go up the support bearing cover the upper portion of eccentric shaft, the base bearing is installed the eccentric shaft middle part.
Optionally, the eccentric shaft comprises a straight shaft and an eccentric wheel, the eccentric wheel being mounted between the straight shaft and the main bearing.
By adopting the scheme, the eccentric wheel is fixed on the eccentric shaft, so that the eccentric wheel becomes an independent component and is convenient to replace.
Optionally, a key groove is formed in the straight shaft corresponding to the eccentric wheel, and a flat key is arranged in the key groove.
By adopting the scheme, the eccentric shaft is composed of the straight shaft and the eccentric wheel, and the flat key transmits the motion of the straight shaft to the eccentric wheel.
Optionally, the eccentric wheel further comprises a limiting part, and the limiting part is sleeved on the straight shaft and is abutted against the eccentric wheel.
By adopting the scheme, the eccentric wheel can be fixed on the straight shaft by the limiting part.
Optionally, the straight shaft has a step structure, the upper side of the eccentric wheel abuts against the step structure, the limiting portion comprises a retainer ring, and the retainer ring is mounted on the lower side of the eccentric wheel and abuts against the lower side of the eccentric wheel.
By adopting the scheme, the limiting part is arranged beside the straight shaft, so that the straight shaft can be limited at the position.
Optionally, the limiting part comprises an upper limiting block and a lower limiting block, the upper limiting block is mounted on the upper portion of the eccentric wheel, and the lower limiting block is mounted on the lower portion of the eccentric wheel.
By adopting the scheme, the upper limiting block and the lower limiting block are respectively arranged above and below the eccentric wheel, and the eccentric wheel can be fixed on the straight shaft.
Optionally, the upper limiting block is located between the upper support bearing and the eccentric wheel, and the lower limiting block is located between the eccentric wheel and the self-aligning bearing.
By adopting the scheme, the upper limiting block and the lower limiting block are respectively contacted with the bearings at two ends so as to fix the eccentric wheel. At this moment the straight axle can directly be the projecting shaft of motor, reduces part quantity, has reduced the cooperation relation, and efficiency improves obviously, and the installation is simpler, and the motor shaft all has better precision and surface quality, can improve the stationarity of operation and the precision of measuring pump.
Optionally, the eccentric wheel and the eccentric shaft are fitted in an interference fit manner.
By adopting the scheme, the eccentric wheel can be better fixed on the eccentric shaft by using interference fit
Optionally, the eccentric shaft is in interference fit with both the upper support bearing and the self-aligning bearing.
By adopting the scheme, the eccentric shaft is matched with the upper supporting bearing and the self-aligning bearing by interference fit, so that the performance of the self-aligning bearing can be better represented.
The utility model provides a pair of metering pump, including push rod and above arbitrary the high-efficient eccentric bearing structure of metering pump, the push rod with the main bearing transmission is connected.
By adopting the scheme, the force on the eccentric shaft can be transmitted to the push rod.
The utility model provides a high-efficiency supporting eccentric structure of a metering pump and the metering pump, which have the following beneficial effects;
by arranging the self-aligning bearing at the bottom of the box body, when the main shaft and the eccentric shaft are not concentric, the self-aligning bearing can automatically adjust the center, so that the requirement on the precision of a bearing groove is reduced, and the requirement on the machining precision of the box body is reduced; and the self-aligning bearing can be adjusted within a certain range, so that the change of the center of the main shaft can be self-adjusted through the self-aligning bearing, and the abrasion of the bearing is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of embodiment 1 of the present invention;
fig. 2 is a schematic structural view of embodiment 2 of the present invention;
fig. 3 is a schematic structural view of embodiment 3 of the present invention.
In the figure 101, the box cover; 102. an upper support bearing; 103. an eccentric shaft; 104. a main bearing; 105. a push rod; 106. a self-aligning bearing; 107. a box body; 201. a box cover; 202. an upper support bearing; 203. a straight shaft; 204. a main eccentric bearing; 205. a push rod; 206. a flat bond; 207. a retainer ring; 208. a self-aligning bearing; 209. a box body; 301. a box cover; 302. an upper support bearing; 303. an upper limit block; 304. a main bearing; 305. a push rod; 306. an eccentric wheel; 307. a lower limiting block; 308. a box body; 309. a flat bond; 310. a motor extends a shaft; 311. self-aligning bearings.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The utility model provides a high-efficient eccentric bearing structure of measuring pump, as shown in figure 1, figure 2 and figure 3, including main bearing 104, go up support bearing 102 and box 107, still include self-aligning bearing 106 and eccentric shaft 103, the self-aligning bearing groove has been seted up to the box 107 bottom, and the lower part of eccentric shaft 103 is located and install in the self-aligning bearing inslot to self-aligning bearing 106 cover, goes up the upper portion of support bearing 102 cover locating the eccentric shaft, and main bearing 104 is installed at the eccentric shaft 103 middle part.
The center of the center bearing 106 can be adjusted within a certain range, the center of the eccentric shaft 103 can be adjusted at the same time, and the center of the eccentric shaft 103 can be finely adjusted, so that friction is reduced, the service life of the bearing is prolonged, meanwhile, the center of the center bearing 106 can be self-adjusted, the precision requirement of a center bearing groove is reduced, and the precision requirement of the box 107 can be improved.
As shown in fig. 1, a self-aligning bearing 106 is installed in a box body 107 in fig. 1, an upper support bearing 102 is installed in a box cover 101, a main bearing 104 is installed on an eccentric shaft 103 through interference fit, the eccentric shaft 103 penetrates into the self-aligning bearing 106, the upper support bearing 102 on the box cover 101 is installed in the eccentric bearing 103, then the box cover 101 and the box body 107 are fixed, a motor extension shaft penetrates into the eccentric shaft 103, the rotary motion of the motor extension shaft is converted into the swing of the main bearing 104 on the eccentric shaft 103, a push rod 105 is driven to move forwards and backwards, the motor extension shaft and the eccentric shaft 103 are coaxial, even if the bearing grooves of the upper support bearing 102 and the self-aligning bearing 106 are not coaxial after the box body 107 and the box cover 101 are matched, the self-aligning bearing 106 can be adjusted to a proper position, the eccentric shaft is free from force in the rotating process, the efficient operation of the eccentric shaft is ensured, the upper support, and the stable operation of the bearing in the extension shaft of the motor is ensured.
As an alternative embodiment, the eccentric shaft 103 comprises a straight shaft 203 and an eccentric 306, the eccentric 306 being mounted between the straight shaft 203 and the main bearing 104.
The use of the eccentric 306 in conjunction with the straight shaft 203 transfers the motion of the straight shaft 203 to the eccentric 306, such that the rotational motion of the straight shaft 203 is transferred to the eccentric 306 to be converted into a cam motion.
As an alternative embodiment, the straight shaft 203 is provided with a key slot corresponding to the eccentric wheel 306, and the flat key 206 is arranged in the key slot.
The flat key 206 and the eccentric wheel 306 are fixed with the straight shaft 203, so that the motion transmission is more stable.
As an optional implementation manner, the device further includes a limiting portion, and the limiting portion is sleeved on the straight shaft 203 and abuts against the eccentric wheel 306.
The eccentric 306 may be constrained to the straight-axis keyway by a stop.
As an alternative embodiment, the straight shaft 203 has a stepped structure, the upper side of the eccentric 306 abuts against the stepped structure, the limiting portion comprises a retaining ring 207, and the retaining ring 207 is mounted on the lower side of the eccentric 306 to abut against the lower side.
The straight shaft 203 is provided with a step structure, so that the eccentric wheel 306 can be limited to move up and down only by using the retainer ring 207.
As shown in fig. 2, a self-aligning bearing 208 is installed in a box 209 in fig. 2, an upper support bearing 202 is installed in a box cover 201 of fig. 2, a flat key 206 is installed in a straight shaft 203, a main eccentric bearing 204 is installed on the straight shaft 203, a retainer ring 207 is sleeved on the straight shaft 203, the straight shaft 203 penetrates through the self-aligning bearing 208, the upper support bearing 202 on the box cover 201 is installed on the straight shaft 203, the box cover 201 and the box 209 are fixed, a motor extension shaft penetrates into the straight shaft 203, the rotary motion of the motor extension shaft is converted into the swing of the main eccentric bearing 204 on the straight shaft 203, a push rod 205 is driven to move forwards and backwards, because the motor extension shaft and the straight shaft 203 are coaxial, even if the bearing pools of the upper support bearing 202 and the self-aligning bearing 208 are not coaxial after the box 209 and the box cover 201 are matched, the self-adjusting position can be realized through the self-aligning bearing 208, the eccentric shaft is not stressed in the rotating process, the efficient operation of the eccentric shaft is ensured, the upper support, and the stable operation of the bearing in the extension shaft of the motor is ensured.
As an alternative embodiment, the limiting part comprises an upper limiting block 303 and a lower limiting block 307, wherein the upper limiting block 303 is installed at the upper part of the eccentric wheel 306, and the lower limiting block 307 is installed at the lower part of the eccentric wheel 306.
The straight shaft has no step structure, the limiting parts are an upper limiting block 303 and a lower limiting block 307, and the eccentric wheel 306 is limited at the position where the flat key 309 is fixed by using the upper limiting block 303 and the lower limiting block 307.
As an alternative embodiment, the upper limit block 303 is located between the upper support bearing 302 and the eccentric 306, and the lower limit block 307 is located between the eccentric 306 and the self-aligning bearing 311.
The upper limit block 303 is contacted with the upper support bearing 302, the lower limit block 307 is contacted with the self-aligning bearing 311, and the eccentric wheel 306 can be fixed on a straight shaft.
As shown in FIG. 3, a self-aligning bearing 311 is installed in the box body, an upper support bearing 302 is installed in the box cover 301, the box cover 301 is inserted into a motor extension shaft 310 and is sleeved with an upper limit block 303, a flat key 309 is installed in the motor extension shaft 310, a main bearing 304 is installed on an eccentric wheel 306 and is sleeved in the motor extension shaft 310, a lower limit block 307 is inserted into the motor extension shaft 310 and is installed in the motor extension shaft 310, the self-aligning bearing 311 on the box body 308 is installed on the motor extension shaft 310, the box cover 301 and the box body 308 are fixed, the rotary motion of the motor extension shaft 310 is converted into the swing of the main bearing 304 on the eccentric wheel 306 through the flat key 309 to drive a push rod 305 to move back and forth, because the motor extension shaft 310 is directly coaxial with the inner ring of the self-aligning bearing 311, even though the bearing pools of the motor extension shaft 301 and the self-aligning bearing 311 are different, the self-adjusted to a proper, the efficient operation of the eccentric shaft is ensured, the upper support bearing 302 can ensure that the radial strain borne by the eccentric wheel 306 cannot be transmitted to the rear end of the motor extension shaft, namely the inside of the gear box, and the stable operation of the bearing in the motor extension shaft 310 is ensured.
As an alternative embodiment, the eccentric 306 fits with the eccentric shaft 103 in an interference fit.
As an alternative embodiment, the eccentric shaft 103 is interference fit with both the upper support bearing 302 and the self-aligning bearing 311.
The main shaft and the bearing are in interference fit, so that the main shaft and the bearing can be matched more tightly.
The utility model provides a metering pump, including push rod 305 with as above arbitrary the high-efficient eccentric bearing structure of metering pump, push rod 305 with the transmission of main bearing 304 is connected.
The push rod 305 can transfer the motion of the cam on the eccentric wheel 306 into the metering pump, so that the rotary motion of the motor shaft is converted into the left-right motion of the push rod 305, and the left-right motion of the push rod 305 changes the volume in the metering pump.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a high-efficient eccentric bearing structure of measuring pump, includes the base bearing, goes up support bearing and box, its characterized in that still includes aligning bearing and eccentric shaft, the aligning bearing groove has been seted up to the bottom half, aligning bearing housing is located the lower part of eccentric shaft and install in the aligning bearing inslot, it locates to go up support bearing housing the upper portion of eccentric shaft, the base bearing is installed the eccentric shaft middle part.
2. A high efficiency eccentric support structure of a metering pump according to claim 1, characterized in that said eccentric shaft comprises a straight shaft and an eccentric wheel, said eccentric wheel being mounted between said straight shaft and said main bearing.
3. The efficient eccentric supporting structure of a metering pump according to claim 2, wherein a key groove is formed in the straight shaft corresponding to the eccentric wheel, and a flat key is arranged in the key groove.
4. The efficient eccentric supporting structure of a metering pump according to claim 3, further comprising a limiting part, wherein the limiting part is sleeved on the straight shaft and is abutted against the eccentric wheel.
5. The efficient eccentric supporting structure of the metering pump according to claim 4, wherein the straight shaft is provided with a step structure, the upper side of the eccentric wheel abuts against the step structure, and the limiting part comprises a check ring which is arranged on the lower side of the eccentric wheel and abuts against the check ring.
6. The efficient eccentric supporting structure of a metering pump according to claim 4, wherein the limiting part comprises an upper limiting block and a lower limiting block, the upper limiting block is mounted on the upper portion of the eccentric wheel, and the lower limiting block is mounted on the lower portion of the eccentric wheel.
7. The metering pump high efficiency eccentric support structure according to claim 6, wherein the upper stopper is located between the upper support bearing and the eccentric wheel, and the lower stopper is located between the eccentric wheel and the self-aligning bearing.
8. The high-efficiency eccentric support structure of a metering pump according to claim 2, characterized in that the manner of fitting the eccentric wheel with the eccentric shaft is interference fit.
9. The high efficiency eccentric support structure of metering pump according to claim 1, characterized in that the eccentric shaft is interference fitted with both the upper support bearing and the self-aligning bearing.
10. A metering pump comprising a high efficiency eccentric support structure for a metering pump according to any one of claims 1 to 9 and a push rod drivingly connected to said main bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921537724.4U CN210623400U (en) | 2019-09-16 | 2019-09-16 | High-efficient eccentric bearing structure of measuring pump and measuring pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921537724.4U CN210623400U (en) | 2019-09-16 | 2019-09-16 | High-efficient eccentric bearing structure of measuring pump and measuring pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210623400U true CN210623400U (en) | 2020-05-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921537724.4U Active CN210623400U (en) | 2019-09-16 | 2019-09-16 | High-efficient eccentric bearing structure of measuring pump and measuring pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210623400U (en) |
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2019
- 2019-09-16 CN CN201921537724.4U patent/CN210623400U/en active Active
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