CN212867876U - Pump valve assembly of reversing valve of color mixer - Google Patents
Pump valve assembly of reversing valve of color mixer Download PDFInfo
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- CN212867876U CN212867876U CN202021737853.0U CN202021737853U CN212867876U CN 212867876 U CN212867876 U CN 212867876U CN 202021737853 U CN202021737853 U CN 202021737853U CN 212867876 U CN212867876 U CN 212867876U
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Abstract
The utility model relates to a pump valve subassembly of color mixer switching-over valve, including valve body, pump case and piston rod, be equipped with big piston and little piston on the piston rod, be equipped with the coaxial little pump body of inner chamber of pump case in the valve body, be fixed with the damping jump ring on the inner wall of valve body, the damping jump ring includes the annular base member of circle and a plurality of elasticity jack catch, be equipped with on the outer wall of the little pump body with damping jump ring complex frustum, be equipped with on the outer wall of frustum a plurality of with little frustum of elasticity jack catch complex. This application can make the elasticity jack catch reliable to little pump body locking when the pressure value of setting for through frustum and the little frustum of setting up on little pump body, can avoid when annotating the little dose valve body internal pressure too big lead to the elasticity jack catch restriction not live little pump body and cause little pump body rebound, guarantee the precision and the reliability that little dose was annotated.
Description
Technical Field
The utility model relates to a compound pump technique, especially a pump valve subassembly of color mixer switching-over valve.
Background
In the color mixing technology, color mixing has strict requirements on the amount of color paste, and the error of the injection amount of the color paste when a color paste pump pumps the color paste is generally required to be not more than a certain proportion range. The current toning technology is commonly used with reciprocating type toning slurry pumps, such as piston pumps, plunger pumps, folding pumps and the like, and the stroke of the toning pump is controlled by a stepping motor to realize the control of the grouting amount of the toning slurry. In order to meet the requirement of precision control of the injection amount of a color paste pump, a U.S. patent document with the publication number of US2009236367A1 discloses a piston pump with double nozzles, wherein a large piston, a small piston and a spring are arranged on a piston rod in a pump shell, so that large-amount and micro-amount color paste can be output, a large amount of color paste is injected when the large piston and the small piston move downwards together, and after the piston touches the bottom, the piston rod overcomes the elasticity of the spring and continuously presses the small piston downwards into a small piston cavity through a thin rod, so that the micro-amount color paste injection is realized, and the high-precision control and adjustment of the injection amount are realized; adopt the spring to control the operating condition of big, little piston as elastic element in this scheme, because the spring can appear deformation after long-term the use, be unfavorable for keeping the control accuracy of spring axis direction for this structural reliability is poor.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a pump valve subassembly of color mixer switching-over valve, the reciprocating pump that can be used for the color mixer switching-over valve realizes or removes the locking to the locking of the little pump body in the big pump body, simple structure, reliability height.
In order to solve the problems, the utility model provides a pump valve subassembly of color mixer switching-over valve, including valve body, pump case and piston rod, be equipped with big piston and little piston on the piston rod, little piston is located the tip of piston rod, big piston is located the upside of little piston, its characterized in that, be equipped with the coaxial little pump body of inner chamber of pump case in the valve body, the external diameter of big piston and the inner wall sealing connection of pump case and can reciprocate in the pump case, the external diameter of little piston and the inner wall sealing connection of little pump body and can reciprocate in the little pump body; a damping clamp spring is fixed on the inner wall of the valve body and comprises an annular base body and a plurality of elastic clamping claws, a frustum matched with the damping clamp spring is arranged on the outer wall of the small pump body, the damping clamp spring is used for locking the small pump body at a preset position in the valve body, and the damping clamp spring can release the locking of the small pump body when the elastic clamping claws deform outwards when the lifting force borne by the small pump body is greater than a set value; and the outer wall of the frustum is provided with a plurality of small frustums matched with the elastic clamping jaws. Preferably, the set value of the lifting force for limiting the upward movement of the small pump body can be adjusted by adjusting the taper of the small frustum, so that the space volume of the small pump body can be saved without increasing the overall taper of the frustum.
The utility model provides a pump valve subassembly of color mixer switching-over valve still has following technical characteristic:
furthermore, the outer wall of the frustum is provided with more than three small frustums.
Furthermore, the valve body is also provided with a sealing end face or a sealing ring face, the damping snap spring can lock the small pump body at the lower end of the inner cavity of the valve body, and the lower end of the small pump body abuts against the sealing end face or the sealing ring face of the valve body; therefore, the liquid in the small pump body can not leak to the closed cavity formed by the small pump body and the valve body outlet when the small dose is injected, and the precision and the stability of small dose injection are ensured.
Furthermore, the piston rod comprises a large piston rod and a small piston rod, the upper end of the small piston rod is fixedly connected with the lower end of the large piston rod, the large piston is fixed at the lower end of the large piston rod, and the small piston is fixed at the lower end of the small piston rod.
Further, be equipped with the confession in the little pump body the piston chamber that little piston rod passed, the upper end in piston chamber is equipped with the anticreep ring, little piston on the little piston rod can piston intracavity reciprocating motion, little piston follows little piston rod upward movement with when the anticreep ring is contradicted little piston rod accessible little piston drives little pump body with the damping jump ring breaks away from and upward movement. Specifically, when the upward pulling force of the small piston and the small piston rod on the small pump body is larger than the set disengaging force of the damping clamp spring, the small pump body is disengaged from the elastic clamping claw, and the small pump body moves upwards along with the piston rod.
Further, the elastic claw comprises a connecting portion, an arc-shaped resisting portion and a guide portion, the upper end of the connecting portion is fixedly connected with the base body, the lower end of the connecting portion extends towards the lower side and the inner side of the base body and is connected with the upper end of the arc-shaped resisting portion, the upper end of the guide portion is fixedly connected with the lower end of the arc-shaped resisting portion, and the lower end of the guide portion extends towards the lower side and the outer side of the base body.
Furthermore, the base body of the damping clamp spring and the elastic clamping claw are made of the same material and are integrally formed.
Furthermore, the damping clamp spring is made of metal or plastic.
Furthermore, the bottom of base member equipartition has 6 the elasticity jack catch.
The utility model discloses following beneficial effect has: the internal structure of a pump valve assembly pump of a reversing valve of a color mixer is redesigned, and a damping clamp spring with a circular base body and a plurality of elastic clamping claws is adopted to lock or unlock a small pump body in a large pump body, so that the damping clamp spring has better anti-elasticity performance (namely, elasticity decline resistance, also called relaxation resistance) and higher fatigue strength compared with a spring due to the structural design of the damping clamp spring, can still meet the design requirements after long-term use, and is simple in structure and good in reliability; the frustum on the outer wall of the small pump body and the small frustum can change the disengaging force of the small pump body by adjusting the taper of the small frustum, so that the elastic clamping jaws can be reliably locked on the small pump body, the situation that the elastic clamping jaws cannot limit the small pump body due to overlarge internal pressure of the valve body when small dosage is injected can be avoided, and the small pump body can move upwards, and the accuracy and the reliability of small dosage injection are guaranteed.
Drawings
Fig. 1 is a schematic structural diagram of a pump valve assembly of a color mixer reversing valve according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a pump valve assembly of the color mixer diverter valve of FIG. 1;
FIG. 3 is an enlarged view of a portion A of FIG. 2;
fig. 4 is a schematic structural diagram of a small pump body in an embodiment of the present invention;
FIG. 5 is a cross-sectional view of the small pump body of FIG. 4;
fig. 6 is a schematic structural diagram of the damping clamp spring in the embodiment of the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
As shown in fig. 1 to 6, in an embodiment of a pump valve assembly of a reversing valve of a color mixer of the present invention, the pump valve assembly of the reversing valve of the color mixer of the present invention includes a valve body 10, a pump case 20 and a piston rod 30, the piston rod 30 is provided with a large piston 301 and a small piston 302, the small piston 302 is located at an end of the piston rod 30, the large piston 301 is located at an upper side of the small piston 302, the valve body 10 is provided with a small pump body 40 coaxial with an inner cavity of the pump case 20, an outer diameter of the large piston 301 is connected with an inner wall of the pump case 20 in a sealing manner, and an outer diameter of the small piston 302 is connected with an inner wall of the small pump body 40 in a; a damping clamp spring 50 is fixed on the inner wall of the valve body 10, the damping clamp spring 50 comprises a circular base body 51 and a plurality of elastic claws 52, a frustum 41 matched with the damping clamp spring 50 is arranged on the outer wall of the small pump body 40, and the elastic claws 52 of the damping clamp spring 50 are used for locking the small pump body 40 at a preset position in the valve body 10, and the damping clamp spring 50 can release the locking of the small pump body 40 when the elastic claws 52 deform outwards; the outer wall of the frustum 41 is provided with a plurality of small frustums 411 matched with the elastic claws 52. The internal structure of a pump valve assembly pump of a reversing valve of a color mixer is redesigned, and a damping clamp spring with a circular base body and a plurality of elastic clamping claws is adopted to lock or unlock a small pump body in a large pump body, so that the damping clamp spring has better anti-elasticity performance (namely, elasticity decline resistance, also called relaxation resistance) and higher fatigue strength compared with a spring due to the structural design of the damping clamp spring, can still meet the design requirements after long-term use, and is simple in structure and good in reliability; the frustum and the plurality of small frustums on the outer wall of the small pump body can ensure that the elastic clamping jaws can reliably lock the small pump body, can avoid the small pump body from moving upwards due to the fact that the elastic clamping jaws cannot limit the small pump body because of overlarge internal pressure of the valve body when small dose is injected, and ensure the accuracy and the reliability of small dose injection; particularly, if the elastic clamping jaws cannot limit the small pump body when the internal pressure of the valve body is too large when small dosage is injected, the small pump body moves upwards, the space occupied by the small pump body can be supplemented by color paste, the injected color paste can be reduced, and the accuracy of design cannot be met by the color paste injection.
When the small pump body moves downwards along with the piston rod, the pump valve component of the reversing valve of the color mixer in the embodiment extrudes color paste in the pump shell downwards through the relative movement between the large piston on the piston rod and the inner wall of the pump shell, so that large-flow injection can be realized; when the piston rod moves downwards to a preset position, the elastic claw of the damping clamp spring locks the small pump body in the valve body, the piston rod continues to move downwards to enable the small piston and the small pump body to move relatively, and color paste in the small pump body is extruded downwards through the relative movement of the small piston and the inner wall of the small pump body, so that small-flow injection can be realized; specifically, as shown in fig. 2, the valve body 10 is further provided with a color paste injection port 101 and a color paste injection port 102 which are respectively communicated with the inner cavity of the pump shell and the inner cavity of the small pump body, the valve body 10 is further provided with a reversing valve core 103 for controlling the opening and closing of each color paste injection port, and the structural design of the color paste injection port and the reversing valve core is not an improvement point of the present application, and the specific structure thereof is not described herein again.
In an embodiment of the present application, preferably, the outer wall of the frustum 41 is provided with more than three small frustums 411, each small frustum 411 has a larger taper angle, so that the elastic claw 52 can reliably lock the small pump body when abutting against the small frustum 411, thereby preventing the small pump body from moving upwards due to the fact that the elastic claw cannot be limited by the small pump body due to too large internal pressure of the valve body when a small dose is injected, and ensuring accuracy and reliability of small dose injection.
In an embodiment of the present application, preferably, the valve body 10 is further provided with a sealing end surface 11 or a sealing ring surface, the damping snap spring 50 can lock the small pump body 40 at the lower end of the inner cavity of the valve body 10, and the lower end of the small pump body 40 abuts against the sealing end surface 11 or the sealing ring surface of the valve body 10, so that when the small pump body 40 is locked in the inner cavity of the valve body 10, the piston rod continues to move downward to make the small piston and the inner wall of the small pump body move relatively, and the color paste in the small pump body is extruded downward through the relative movement of the small piston and the inner wall of the small pump body, so that the; the structure of the sealing end face 11 is shown in fig. 2 and 3, specifically, an annular convex plate 12 matched with the outer wall of the lower end of the small pump body protrudes upwards from the inner cavity of the valve body 10, and a sealing ring 42 matched with the inner wall of the annular convex plate 12 is arranged on the outer wall of the lower end of the small pump body 40; in another embodiment, the lower end surface of the small pump body 40 is provided with a sealing ring matched with the sealing end surface 11.
In one embodiment of the present application, preferably, the piston rod 30 includes a large piston rod 31 and a small piston rod 32, an upper end of the small piston rod 32 is fixed to a lower end of the large piston rod 31 by a threaded connection, the large piston 301 is fixed to a lower end of the large piston rod 31, and the small piston 302 is fixed to a lower end of the small piston rod 32, thereby facilitating the manufacturing of the piston rod and facilitating the installation and fixation of the large piston.
In an embodiment of the present application, preferably, a piston cavity 401 through which the small piston rod 32 passes is provided in the small pump body 40, the upper end of the piston cavity 401 is provided with the anti-drop ring 43, the small piston 302 on the small piston rod 32 can reciprocate in the piston cavity 401, and when the small piston 302 collides with the anti-drop ring 43 along with the upward movement of the small piston rod 32, the small piston rod can drive the small pump body 40 to be separated from the damping snap spring 50 and move upward through the small piston; specifically, the friction force between the small piston 302 and the inner wall of the piston cavity 401 is smaller than the acting force of the elastic claw 52 on the frustum 41, the small pump body 40 is locked in the valve body 10 under the action of the damping clamp spring 50 when the small piston 302 reciprocates in the piston cavity 41 along with the small piston rod 32, and the small pump body 40 is stationary relative to the valve body in the inner cavity of the valve body 10; if the small piston 302 moves upwards along with the small piston rod 32 and abuts against the anti-drop ring 43, the small piston rod continues to move upwards, the upward pulling force of the small piston rod 32 on the small pump body 40 through the small piston 302 is larger than the acting force of the elastic claws 52 on the frustum 41, the elastic claws 52 deform outwards and separate from the frustum 41, so that the small pump body 4 is separated from the damping snap spring 50, the damping spring 50 unlocks the small pump body 40, and the small pump body 40 moves upwards synchronously along with the small piston 302 and the small piston rod 32.
In an embodiment of the present application, preferably, the elastic claw 52 includes a connection portion 521, an arc-shaped abutting portion 522 and a guide portion 523, an upper end of the connection portion 521 is fixedly connected to the base 51, a lower end of the connection portion 521 extends to the lower side and the inner side of the base 51 and is connected to an upper end of the arc-shaped abutting portion 522, an upper end of the guide portion 523 is fixedly connected to a lower end of the arc-shaped abutting portion 522, and a lower end of the guide portion 523 extends to the lower side and the outer side of the base 51, so that the elastic claw can be reliably engaged with or disengaged from the frustum. Preferably, the base body of the damping clamp spring 50 and the elastic claw are made of the same material and are integrally formed, so that the elastic claw has better connection strength and elastic deformation performance. Preferably, the damping clamp spring 50 is made of metal or plastic, and it is understood that the metal or plastic used for the damping clamp spring 50 refers to metal or plastic with good elastic deformation capability. Preferably, the bottom of the base body 51 is uniformly distributed with 6 elastic claws 52, so that the circumferential force of the frustum 41 is uniform, and the elastic claws can reliably position or release the positioning of the small pump body.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (9)
1. A pump valve assembly of a reversing valve of a color mixer comprises a valve body, a pump shell and a piston rod, wherein a large piston and a small piston are arranged on the piston rod, the small piston is positioned at the end part of the piston rod, and the large piston is positioned on the upper side of the small piston; a damping clamp spring is fixed on the inner wall of the valve body and comprises an annular base body and a plurality of elastic clamping jaws, a frustum matched with the damping clamp spring is arranged on the outer wall of the small pump body, the damping clamp spring is used for locking the small pump body at a preset position in the valve body, and when an upward lifting force applied to the small pump body is greater than a set bearing lifting force, the elastic clamping jaws deform outwards to release the locking of the small pump body; and the outer wall of the frustum is provided with a plurality of small frustums matched with the elastic clamping jaws.
2. The pump valve assembly of claim 1, wherein: the outer wall of the frustum is provided with more than three small frustums.
3. The pump valve assembly of claim 1, wherein: the valve body still is equipped with seal end face or sealed anchor ring, the damping jump ring can with the little pump body locking is in the lower extreme of the inner chamber of valve body just the lower extreme of the little pump body is contradicted the seal end face or the sealed anchor ring of valve body.
4. The pump valve assembly of claim 1, wherein: the piston rod comprises a large piston rod and a small piston rod, the upper end of the small piston rod is fixedly connected with the lower end of the large piston rod, the large piston is fixed at the lower end of the large piston rod, and the small piston is fixed at the lower end of the small piston rod.
5. The pump valve assembly of claim 4, wherein: be equipped with the confession in the little pump body the piston chamber that little piston rod passed, the upper end in piston chamber is equipped with the anticreep ring, little piston on the little piston rod can piston intracavity reciprocating motion, little piston follows little piston rod upward movement with when the anticreep ring is contradicted, little piston rod accessible little piston drives little pump body with the damping jump ring breaks away from and the upward movement.
6. The pump valve assembly of claim 1, wherein: the elastic clamping jaw comprises a connecting portion, an arc-shaped abutting portion and a guide portion, the upper end of the connecting portion is fixedly connected with the base body, the lower end of the connecting portion extends towards the lower side and the inner side of the base body and is connected with the upper end of the arc-shaped abutting portion, the upper end of the guide portion is fixedly connected with the lower end of the arc-shaped abutting portion, and the lower end of the guide portion extends towards the lower side and the outer side of the base body.
7. The pump valve assembly of claim 1, wherein: the base body of the damping clamp spring and the elastic clamping claw are made of the same material and are integrally formed.
8. The pump valve assembly of claim 7, wherein: the damping clamp spring is made of metal or plastic.
9. The pump valve assembly of claim 7, wherein: the bottom equipartition of base member has 6 the elasticity jack catch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021737853.0U CN212867876U (en) | 2020-08-19 | 2020-08-19 | Pump valve assembly of reversing valve of color mixer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021737853.0U CN212867876U (en) | 2020-08-19 | 2020-08-19 | Pump valve assembly of reversing valve of color mixer |
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| Publication Number | Publication Date |
|---|---|
| CN212867876U true CN212867876U (en) | 2021-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021737853.0U Active CN212867876U (en) | 2020-08-19 | 2020-08-19 | Pump valve assembly of reversing valve of color mixer |
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| CN (1) | CN212867876U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114669412A (en) * | 2022-04-01 | 2022-06-28 | 福州盛领科智能科技有限公司 | Precise drawing device for paint tank |
-
2020
- 2020-08-19 CN CN202021737853.0U patent/CN212867876U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114669412A (en) * | 2022-04-01 | 2022-06-28 | 福州盛领科智能科技有限公司 | Precise drawing device for paint tank |
| CN114669412B (en) * | 2022-04-01 | 2024-03-22 | 福州盛领科智能科技有限公司 | Accurate draw-out device of paint pot |
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