CN214064541U - Grease pumping device and centralized lubricating system - Google Patents
Grease pumping device and centralized lubricating system Download PDFInfo
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- CN214064541U CN214064541U CN202022566861.XU CN202022566861U CN214064541U CN 214064541 U CN214064541 U CN 214064541U CN 202022566861 U CN202022566861 U CN 202022566861U CN 214064541 U CN214064541 U CN 214064541U
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Abstract
The utility model relates to a grease pumping installations and centralized lubrication system. The grease pumping device comprises a pump body, a plunger pair, a reversing valve, a driving device, a rotating part and a transmission part, wherein the reversing valve is provided with a valve core; the transmission part is in transmission fit with the valve core to drive the valve core to do reciprocating linear motion, and the reversing of the reversing valve is realized by controlling the driving device to change the rotating direction of the rotating part; when the rotating member continues to rotate in the original direction after the reversing valve finishes reversing, the transmission structure is separated from the power of the rotating member, or the transmission member is a worm which is in running fit with the valve core, the rotating member is a worm wheel, and the reversing of the reversing valve can be controlled by changing the rotating direction of the rotating member through controlling the driving device. The utility model is not easy to generate heat through mechanical reversing, and the lubricating grease is not easy to deteriorate; the mechanical reversing is safe and reliable, the failure rate is low, and the technical problem that the service life of an electromagnetic reversing valve adopted by the conventional grease pumping device is short and the grease supply efficiency is influenced is solved.
Description
Technical Field
The utility model relates to a grease pumping installations and centralized lubrication system.
Background
The centralized lubrication system is widely applied to the fields of large-scale engineering machinery, automatic production lines and the like, and generally adopts a grease pumping device to pump lubricating grease to a grease distributor and then convey the lubricating grease to a lubrication point through the grease distributor.
At present, a commonly used grease pumping device is a plunger type grease pumping device, and comprises an oil tank for storing lubricating grease, a driving device, a plunger pair and a pump body for installing the components, wherein an oil suction port of the plunger pair is communicated with the oil tank, an output rotating shaft of the driving device is sleeved with an eccentric wheel, and a plunger of the plunger pair is abutted against the rim of the eccentric wheel along the radial direction of a conveying rotating shaft, so that the plunger of the plunger pair is driven to do reciprocating linear motion, a certain amount of lubricating grease is sucked by the oil suction port of the plunger pair, and the lubricating grease is conveyed to a lubricating part through an oil discharge port of the plunger pair. The oil discharge port is provided with two oil discharge ports, a reversing valve is arranged on a lubricating pipeline communicated with the oil discharge port of the plunger pair, the reversing valve is provided with at least two valve positions, when the reversing valve is positioned at a first valve position, lubricating grease can be conveyed to a part to be lubricated, namely a pressurization stage, and when the reversing valve is positioned at a second valve position, residual lubricating grease can flow back to an oil tank, namely a pressure relief stage. An oil inlet of the reversing valve is communicated with an oil discharge port of the plunger pair, an oil return port of the reversing valve is communicated with an oil tank, an oil outlet of the reversing valve is communicated with a lubricating pipeline, when the reversing valve is at a first valve position, the oil inlet is communicated with the oil outlet, grease enters the lubricating pipeline and is conveyed to a lubricating part, when the reversing valve is at a second valve position, the oil outlet is communicated with the oil return port, and the grease in the lubricating pipeline returns to the oil tank.
The current reversing valve usually adopts an electromagnetic reversing valve, and because grease is viscous, the current of the electromagnetic valve is large, the electromagnetic valve is easy to generate heat and is burnt out, so that the technical problem that the service life of the electromagnetic reversing valve is short is caused, and in addition, the electromagnetic valve generates heat, and the grease is easy to dry and cause deterioration phenomena, and equipment faults are easy to cause.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a grease pumping device, which is used for solving the technical problem that the service life of an electromagnetic directional valve adopted by the prior grease pumping device is lower so as to influence the oil supply efficiency; in addition, the utility model discloses an aim at still provides an use above-mentioned grease pumping installations's centralized lubrication system.
The utility model discloses a grease pumping installations adopts following technical scheme:
the grease pumping device comprises:
the pump body is provided with a pump body oil port;
the plunger piston pair is provided with an oil discharge port;
the reversing valve is communicated with the oil discharge port of the plunger pair and is provided with a valve core for switching oil discharge of the oil port of the pump body;
the driving device drives the plunger of the plunger pair to do reciprocating linear motion;
the rotating piece is driven by the driving device to rotate positively and negatively;
the transmission part is driven by the rotating part to do reciprocating linear motion;
the transmission part is in transmission fit with the valve core to drive the valve core to do reciprocating linear motion, and the reversing of the reversing valve is realized by controlling the driving device to change the rotating direction of the rotating part;
the transmission part is provided with a transmission structure in transmission fit with the rotating part, when the rotating part continues to rotate in the original direction after the reversing valve finishes reversing, the transmission structure is separated from the power of the rotating part, or the transmission part is a worm in rotation fit with the valve core, the rotating part is a worm wheel, and when the rotating part continues to rotate in the original direction after the reversing valve finishes reversing, the worm idles along with the worm wheel.
Has the advantages that: the grease pumping device adopts a mode of driving a rotating part and a transmission part to drive a valve core of the reversing valve, the driving device drives the rotating part to move, the rotating part drives the transmission part to do reciprocating linear motion, the transmission part drives the valve core to do reciprocating linear motion, the driving part can be continuously rotated without damaging the reversing valve by controlling the driving device, after the reversing valve is completed, the driving part can be continuously rotated through a transmission structure or a worm, and the transmission part stops continuously moving along one direction. The utility model is not easy to generate heat through mechanical reversing, and the lubricating grease is not easy to deteriorate; the mechanical reversing is safe and reliable, the failure rate is low, and the technical problem that the service life of an electromagnetic reversing valve adopted by the conventional grease pumping device is short and the grease supply efficiency is influenced is solved.
Furthermore, the transmission part comprises a rack, the teeth of the rack form the transmission structure, the rotating part is a gear meshed with the rack, and the grease pumping device further comprises an elastic part which is used for applying elastic force to the rack to enable the rack to keep in contact with the gear. The gear rack is stable in transmission operation, the elastic piece keeps the contact between the gear rack and the gear, and the gear rack can be driven to perform reverse linear motion when rotating reversely.
Furthermore, the transmission part and the valve core float and match in the valve core movement direction, so that the valve core does not act along with the rack when the gear drives the rack to move to the extreme position and then continues to rotate in the original direction. The floating fit can reduce the abrasion of the valve core and prolong the service life of the valve core.
Furthermore, the elastic part is a spring arranged between the transmission part and the valve core, two ends of the spring are respectively connected to the transmission part and the valve core, and the gear is meshed with the rack when the spring is in the original length, so that the spring is respectively in a stretching state and a compressing state when the rack moves to the limit position along the positive direction and the negative direction. The spring has simple structure, convenient arrangement and lower cost.
Furthermore, the transmission part comprises a connecting rod fixed with the rack, the spring is sleeved on the connecting rod, one end of the spring is connected to the rack, and the other end of the spring is connected to the valve core. The spring housing is better in stability on the connecting rod.
Furthermore, a long hole is formed in the valve core or the transmission part, and the valve core and the transmission part are in floating fit through the long hole. The long hole has simple structure and is convenient to assemble.
Furthermore, a worm stop structure is arranged in the pump body, and the worm is in stop fit with the worm stop structure after moving to the extreme position, so that the worm idles along with the rotating piece. The axial stress of the valve core can be reduced by the stopping structure, and the strength requirement of the valve core is lowered.
Furthermore, the number of the pump body oil ports is two, one of the two pump body oil ports is used for feeding oil, and the other pump body oil port is used for discharging oil in the reciprocating linear motion process of the valve core of the reversing valve. The oil outlet efficiency of the oil ports of the double pump bodies is higher.
The utility model discloses centralized lubrication system's technical scheme:
the centralized lubricating system comprises a grease pumping device, an oil tank and a distributor;
the grease pumping device comprises:
the pump body is provided with a pump body oil port;
the plunger piston pair is provided with an oil discharge port;
the reversing valve is communicated with the oil discharge port of the plunger pair and is provided with a valve core for switching oil discharge of the oil port of the pump body;
the driving device drives the plunger of the plunger pair to do reciprocating linear motion;
the rotating piece is driven by the driving device to rotate positively and negatively;
the transmission part is driven by the rotating part to do reciprocating linear motion;
the transmission part is in transmission fit with the valve core to drive the valve core to do reciprocating linear motion, and the reversing of the reversing valve is realized by controlling the driving device to change the rotating direction of the rotating part;
the transmission part is provided with a transmission structure in transmission fit with the rotating part, when the rotating part continues to rotate in the original direction after the reversing valve finishes reversing, the transmission structure is separated from the power of the rotating part, or the transmission part is a worm in rotation fit with the valve core, the rotating part is a worm wheel, and when the rotating part continues to rotate in the original direction after the reversing valve finishes reversing, the worm idles along with the worm wheel.
Has the advantages that: the grease pumping device drives the valve core of the reversing valve in a manner of driving the rotating part and the transmission part, the driving device drives the rotating part to act, the rotating part drives the transmission part to do reciprocating linear motion, the transmission part drives the valve core to do reciprocating linear motion, the reversing of the reversing valve can be controlled by changing the rotating direction of the rotating part by controlling the driving device, after the reversing valve finishes reversing, the driving part can be continuously rotated through the transmission structure or the worm, and the transmission part stops continuously moving along one direction. The utility model is not easy to generate heat through mechanical reversing, and the lubricating grease is not easy to deteriorate; the mechanical reversing is safe and reliable, the failure rate is low, and the technical problem that the service life of an electromagnetic reversing valve adopted by the conventional grease pumping device is short and the grease supply efficiency is influenced is solved.
Furthermore, the transmission part comprises a rack, the teeth of the rack form the transmission structure, the rotating part is a gear meshed with the rack, and the grease pumping device further comprises an elastic part which is used for applying elastic force to the rack to enable the rack to keep in contact with the gear. The gear rack is stable in transmission operation, the elastic piece keeps the contact between the gear rack and the gear, and the gear rack can be driven to perform reverse linear motion when rotating reversely.
Furthermore, the transmission part and the valve core float and match in the valve core movement direction, so that the valve core does not act along with the rack when the gear drives the rack to move to the extreme position and then continues to rotate in the original direction. The floating fit can reduce the abrasion of the valve core and prolong the service life of the valve core.
Furthermore, the elastic part is a spring arranged between the transmission part and the valve core, two ends of the spring are respectively connected to the transmission part and the valve core, and the gear is meshed with the rack when the spring is in the original length, so that the spring is respectively in a stretching state and a compressing state when the rack moves to the limit position along the positive direction and the negative direction. The spring has simple structure, convenient arrangement and lower cost.
Furthermore, the transmission part comprises a connecting rod fixed with the rack, the spring is sleeved on the connecting rod, one end of the spring is connected to the rack, and the other end of the spring is connected to the valve core. The spring housing is better in stability on the connecting rod.
Furthermore, a long hole is formed in the valve core or the transmission part, and the valve core and the transmission part are in floating fit through the long hole. The long hole has simple structure and is convenient to assemble.
Furthermore, a worm stop structure is arranged in the pump body, and the worm is in stop fit with the worm stop structure after moving to the extreme position, so that the worm idles along with the rotating piece. The axial stress of the valve core can be reduced by the stopping structure, and the strength requirement of the valve core is lowered.
Furthermore, the number of the pump body oil ports is two, one of the two pump body oil ports is used for feeding oil, and the other pump body oil port is used for discharging oil in the reciprocating linear motion process of the valve core of the reversing valve. The oil outlet efficiency of the oil ports of the double pump bodies is higher.
Drawings
Fig. 1 is a schematic structural view of a grease pumping device according to embodiment 1 of the present invention;
fig. 2 is a schematic structural view of a grease pumping device according to embodiment 2 of the present invention;
fig. 3 is a schematic structural view of a worm gear in embodiment 2 of the grease pumping device of the present invention;
in the figure: 1-a valve core; 41-long hole; 2-a gear; 3-a rack; 31-opposite end teeth; 32-positive end teeth; 4-a connecting rod; 5-a pin shaft; 6-a spring; 7-a worm; 8-a worm gear; 9-a stop block; 10-a drive device; 11-power output shaft.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the described embodiments are only some, but not all embodiments of the invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The features and properties of the present invention are described in further detail below with reference to examples.
The utility model discloses grease pumping installations's embodiment 1:
as shown in fig. 1, the grease pumping device includes a pump body, a plunger pair and a driving device for driving the plunger pair to move, the plunger pair is disposed in the pump body, the plunger pair has an oil suction port and an oil discharge port, the oil suction port of the plunger pair is communicated with the oil tank, and the driving device can drive the plunger of the plunger pair to perform reciprocating linear motion to discharge grease in the oil tank from the oil discharge port of the plunger pair. In the embodiment, the driving device comprises a driving motor and a speed reducer, and in other embodiments, the driving device can adopt a motor, and the motor can adopt hydraulic or pneumatic driving.
The grease pumping device is a double-line lubricating pump, two pump body oil ports are formed in the pump body, a reversing valve is arranged on the pump body, the reversing valve in the embodiment is a two-position four-way reversing valve, the reversing valve comprises a reversing valve casing and a valve core 1, the valve core 1 is in sliding seal fit with the reversing valve casing, one end of the valve core 1 extends out of the reversing valve casing, an oil inlet, an oil return port and two oil outlets are formed in the reversing valve casing, the oil inlet of the reversing valve is communicated with an oil discharge port of a plunger pair, the oil return port is communicated with an oil tank, the two oil outlets are respectively communicated with the two pump body oil ports, the reversing valve is provided with the valve core 1 for switching the oil discharge states of the pump body oil ports, one of the two pump body oil ports enters oil ports, and the other pump body oil discharges oil in the reciprocating action process of the valve core 1.
In this embodiment, a cam is disposed on a power output shaft of the driving device, and the cam drives a plunger of the plunger pair to reciprocate. The structure of the pump body and the drive device is known in the art, and reference can be made to the pump body and the drive mechanism in publication No. CN109707982A, for example.
Still be equipped with on drive arrangement's the power output shaft and rotate the piece, it is fixed with driving motor's power output shaft to rotate the piece, in this embodiment, it is gear 2 to rotate the piece, 2 transmission of gear are connected with the driving medium, the driving medium includes 3 racks with the 2 meshing of gear and fixes at connecting rod 4 with rack 3, the tooth of rack 3 constitutes and rotates a transmission structure of transmission complex, 1 one end of case is connected through round pin axle 5 with connecting rod 4, be equipped with the slot hole 41 that supplies round pin axle 5 to pass on the connecting rod 4, the waist length of slot hole 41 extends along the direction of motion of case 1. The connecting rod 4 is sleeved with a spring 6, one end of the spring 6 is fixed on the end face of the rack 3, the other end of the spring 6 is fixed on the end face of the valve element 1, the power output shaft of the driving device drives the gear 2 to rotate when rotating, the transmission part transmits power to the valve element 1 through the rack 3 meshed with the gear 2, and then the valve element 1 is enabled to move linearly to change direction. In the embodiment, when the spring 6 is in the original length state, the middle of the rack 3 is meshed with the gear 2, so that the spring 6 is in a compressed state and a stretched state when the rack 3 moves to the limit position along the positive and negative directions. Because the movement stroke of the valve core 1 in the reversing process is fixed, the length of the rack 3 is set according to the movement stroke of the valve core 1.
When the valve core 1 moves forwards and reverses, the gear 2 rotates forwards to drive the rack 3 to move forwards, the spring 6 is compressed until the rack 3 moves to a forward limit position, at the moment, the valve core 1 reverses forwards, the reverse end tooth 31 at one end of the rack 3 is separated from the tooth of the gear 2, under the action of the spring 6, the rack 3 moves reversely under the action of the spring 6 after the rack 3 is separated from the gear 2, and the reverse end tooth 31 of the rack 3 contacts with the tooth of the gear 2 again, so that the rack 3 can be driven to move reversely when the gear 2 moves reversely. At the moment, because the movement amplitude of the rack 3 is smaller, the pin shaft 5 on the connecting rod 4 fixed with the rack 3 slides in the long hole 41, the valve core 1 cannot be pulled by the rack 3, the valve core 1 is kept still, the abrasion loss of the valve core 1 in the back-and-forth movement is reduced, and the service life of the valve core 1 is prolonged. The gear 2 continues to rotate, and the rack 3 moves linearly and reciprocally with a small amplitude relative to the valve core 1 under the action of the spring 6 and the long hole 41.
When the direction needs to be changed again, the gear 2 rotates reversely to drive the rack 3 to move reversely, the connecting rod 4 fixed with the rack 3 drives the valve core 1 to move reversely, the rack 3 moves reversely to the reverse limit position, the valve core 1 moves reversely to complete the direction change, the forward end teeth 32 at the other end of the rack 3 are separated from the gear 2, the spring 6 is stretched, the rack 3 moves forward under the action of the spring 6, and the forward end teeth 32 of the rack 3 are contacted with the teeth of the gear 2 again, so that the rack 3 can be driven to move forward when the gear 2 moves forward. At this time, because the movement amplitude of the rack 3 is small, the pin shaft 5 on the connecting rod 4 fixed with the rack 3 slides in the long hole 41, the valve core 1 cannot be pulled by the rack 3, the valve core 1 is kept still, and the abrasion loss of the valve core 1 in the back-and-forth movement is reduced. The gear 2 continues to rotate, and the rack 3 moves linearly and reciprocally with a small amplitude relative to the valve core 1 under the action of the spring 6 and the long hole 41.
The utility model discloses a grease pumping installations passes through drive arrangement, rack and pinion mechanism to the case drive, makes the case accomplish the switching-over, and the in-process mechanical shock of whole operation is little to it is little to generate heat among the operation process, long service life.
The utility model discloses a be equipped with on the driving medium with rotate a transmission complex transmission structure, rotate the piece after the switching-over is accomplished to the switching-over valve and continue when rotating according to former direction, transmission structure and rotation piece power separation, power separation indicates that the piece no longer provides continuous power to the transmission piece, the position after the switching-over that makes the case keep, in the above-mentioned embodiment promptly wheel and rack break away from the meshing relation, the elasticity that provides through the spring makes the rack retreat with the gear contact once more, and then the condition when making rack small-amplitude move still belongs to dynamic analysis's situation.
The utility model discloses grease pumping installations's concrete embodiment 2, the structure of the pumping installations in this embodiment only lies in with the difference in the above-mentioned embodiment: as shown in fig. 2 and 3, the driving member of the pumping device in this embodiment is a worm 7, the rotating member is a worm wheel 8, and the worm wheel 8 is fixed on the power output shaft 11 of the driving device 10.
The worm 7 is in running fit with the valve core 1, and a stop structure of the worm 7 is arranged in the pump body, and the stop structure is a stop block 9 in the embodiment. The worm 7 is matched with the stop block in a stop way after moving to the extreme position, so that the worm 7 idles along with the rotating piece. In other embodiments, the stop structure can be eliminated, and the positions of the worm and the valve core are maintained by axial stop of the valve core and the valve body.
The utility model discloses grease pumping installations's concrete embodiment 3, the structure of the pumping installations in this embodiment only lies in with the difference in the above-mentioned embodiment: in this embodiment, the rotating member of the pumping device is a nut, the transmission member is a screw rod matched with the nut, the screw rod is matched with the valve core in a transmission manner and is limited and matched in the axial direction, and the screw rod is driven by the nut to perform linear reciprocating motion in the axial direction of the valve core. In the embodiment, the direction of the variable force between the nut and the output shaft of the driving device needs to be changed through the bevel gear. The length of the transmission wire on the screw rod is set according to the stroke of the valve core, and the transmission between the screw rod and the nut is kept through the spring. In other embodiments, the rotating member may be a screw rod, and the transmission member may be a nut.
The utility model discloses grease pumping installations's concrete embodiment 4, the structure of the pumping installations in this embodiment only lies in with the difference in the above-mentioned embodiment: in this embodiment, two springs are provided, one of which provides an elastic force to the rack in the forward limit position, and the other of which provides an elastic force to the rack in the reverse limit position.
The utility model discloses grease pumping installations's concrete embodiment 5, the structure of the pumping installations in this embodiment only lies in with the difference in the above-mentioned embodiment: in this embodiment, be provided with the round pin axle on the connecting rod, set up the slot hole on the case. In other embodiments, the connecting rod can be directly fixed with the valve core, and after the reversing valve finishes reversing, when the rack reciprocates in a small amplitude, the valve core can shake in a small amplitude along with the rack.
The utility model discloses grease pumping installations's concrete embodiment 6, the structure of the pumping installations in this embodiment only lies in with the difference in the above-mentioned embodiment: in this embodiment, the spring sets up two, and two springs are connected respectively on rack and case, and the driving medium passes through the action of spring drive valve core. The transmission piece and the valve core can be floated only through the spring.
The utility model discloses grease pumping installations's concrete embodiment 7, the structure of the pumping installations in this embodiment only lies in with the difference in the above-mentioned embodiment: in this embodiment, the driving medium only includes the rack, through setting up the round pin axle on the rack, sets up the slot hole that supplies the round pin axle to pass on the case.
The utility model discloses grease pumping installations's concrete embodiment 8, the structure of the pumping installations in this embodiment only lies in with the difference in the above-mentioned embodiment: the grease pumping device in the embodiment is a single-line lubricating pump, one oil port of the pump body is arranged, the reversing valve is a two-position three-way reversing valve, and the oil port of the pump body is communicated with an oil discharge port of an oil tank or a plunger pair in the reciprocating linear motion process of a valve core of the reversing valve.
The utility model discloses grease pumping installations's concrete embodiment 9, the structure of the pumping installations in this embodiment only lies in with the difference in the above-mentioned embodiment: can set up the elasticity tooth on the rack in this embodiment, the elasticity tooth can let the gear pass through, can pass through the gear drive rack motion again during the gear commutation simultaneously.
The utility model discloses concentrate lubricating system's embodiment, concentrate lubricating system and include grease pumping installations, oil tank and distributor, grease pumping installations's structure and any embodiment in the above-mentioned grease pumping installations in the structure the same.
The above description is only for the preferred embodiment of the present invention, and the present invention is not limited thereto, the protection scope of the present invention is defined by the claims, and all structural changes equivalent to the contents of the description and drawings of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A grease pumping device comprising:
the pump body is provided with a pump body oil port;
the plunger piston pair is provided with an oil discharge port;
the reversing valve is communicated with an oil outlet of the plunger pair and is provided with a valve core (1) for switching oil outlet of an oil port of the pump body;
the driving device drives the plunger of the plunger pair to do reciprocating linear motion;
characterized in that, grease pumping device still includes:
the rotating piece is driven by the driving device to rotate positively and negatively;
the transmission part is driven by the rotating part to do reciprocating linear motion;
the transmission part is in transmission fit with the valve core (1) to drive the valve core (1) to do reciprocating linear motion, and the reversing of the reversing valve is realized by controlling the driving device to change the rotating direction of the rotating part;
the transmission part is provided with a transmission structure in transmission fit with the rotating part, when the rotating part continues to rotate in the original direction after the reversing valve finishes reversing, the transmission structure is separated from the power of the rotating part, or the transmission part is a worm (7) in rotation fit with the valve core (1), the rotating part is a worm wheel (8), and when the rotating part continues to rotate in the original direction after the reversing valve finishes reversing, the worm (7) idles along with the worm wheel (8).
2. A grease pumping device according to claim 1, characterized in that the transmission member comprises a rack (3), the teeth of the rack (3) constitute the transmission structure, and the rotating member is a gear (2) that engages with the rack (3), and the grease pumping device further comprises an elastic member for applying an elastic force to the rack (3) to keep the rack (3) in contact with the gear (2).
3. A grease pumping device according to claim 2, characterized in that the transmission member is in floating fit with the valve core (1) in the direction of movement of the valve core (1), so that the valve core (1) does not follow the rack (3) when the gear drives the rack (3) to move to the extreme position and then continues to rotate in the original direction.
4. A grease pumping device according to claim 3, characterized in that the elastic member is a spring (6) arranged between the transmission member and the valve core (1), both ends of the spring (6) are connected to the transmission member and the valve core (1), respectively, and the gear (2) is engaged with the rack (3) when the spring (6) is at its original length, so that the spring (6) is in a stretched state and a compressed state when the rack (3) moves to the limit position in the forward and reverse directions, respectively.
5. A grease pumping device according to claim 4, characterized in that the transmission member comprises a connecting rod (4) fixed to the rack (3), the spring (6) is sleeved on the connecting rod (4), one end of the spring (6) is connected to the rack (3) and the other end is connected to the valve cartridge (1).
6. A grease pumping device according to claim 3, 4 or 5, characterized in that the valve core (1) or the transmission member is provided with a slot (41), and the valve core (1) and the transmission member are in floating fit through the slot (41).
7. The grease pumping device according to claim 1, characterized in that a worm (7) stop structure is arranged in the pump body, and the worm (7) is in stop fit with the worm (7) stop structure after moving to the extreme position, so that the worm (7) idles along with the rotating member.
8. The grease pumping device according to any one of claims 1-5, wherein two pump body ports are provided, and one of the two pump body ports feeds oil and the other pump body port feeds oil during the reciprocating linear motion of the valve core (1) of the reversing valve.
9. Centralized lubrication system comprising a grease pumping device, a tank and a distributor, characterized in that the grease pumping device is a grease pumping device according to any one of claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022566861.XU CN214064541U (en) | 2020-11-09 | 2020-11-09 | Grease pumping device and centralized lubricating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022566861.XU CN214064541U (en) | 2020-11-09 | 2020-11-09 | Grease pumping device and centralized lubricating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214064541U true CN214064541U (en) | 2021-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022566861.XU Active CN214064541U (en) | 2020-11-09 | 2020-11-09 | Grease pumping device and centralized lubricating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214064541U (en) |
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2020
- 2020-11-09 CN CN202022566861.XU patent/CN214064541U/en active Active
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