Heater oil pump with damping structure

Abstract

The utility model discloses a heater oil pump with damping structure, including pump body, plunger subassembly and check valve subassembly, and the one end of pump body is the oil outlet, and the other end is the oil inlet, and the hollow of pump body is provided with the cavity for containing check valve subassembly, and the cavity is located the oil outlet intercommunication and is established, and plunger subassembly includes the plunger of activity setting in the pump body, and is provided with the oil hole on the pump body, and check valve subassembly includes the steel ball of activity setting in the cavity to block or away from the oil hole when plunger subassembly operates, and is provided with the reset member for driving steel ball activity reset in the cavity to make steel ball reseal the oil hole opening and the reset member is used for with linkage cooperation to reduce the shock action force and noise of the collision between steel ball and the inner wall of oil hole opening when steel ball resets damping structure. The utility model has solved the problem of the shock action force and noise of the frequent collision between steel ball and oil hole in the traditional heater oil pump when check valve subassembly operates.

Description

Technical Field

[0001] This utility model relates to the field of heater oil pump technology, specifically a heater oil pump with a shock-absorbing structure. Background Technology

[0002] In industrial production and daily life, heater oil pumps are widely used in various applications requiring the delivery of heated oil. Their stability and reliability are crucial to the operation of the entire system. The working principle of a heater oil pump is mainly based on the reciprocating motion of a plunger assembly, which drives a check valve assembly to achieve oil intake and discharge. Traditional heater oil pumps typically consist of a pump body, a plunger assembly, and a check valve assembly. The check valve assembly uses a steel ball movable within its cavity to block or move away from the oil passage during plunger assembly operation, controlling the direction of oil flow. However, during the operation of a traditional heater oil pump, the steel ball in the check valve assembly needs to frequently open and close the oil passage. When the steel ball is reset by a reset device to close the oil passage opening, it collides with the inner wall of the opening. Due to the high frequency of the plunger assembly's reciprocating motion, this frequent collision generates significant vibration and noise, which not only damages the pump's structure and affects its service life but also causes noise pollution to the surrounding working environment. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a heater oil pump with a shock-absorbing structure, which solves the problem of excessive vibration and noise caused by frequent collisions between the steel ball and the oil passage in the one-way valve assembly during operation in traditional heater oil pumps.

[0004] To achieve the above objectives, this utility model provides a heater oil pump with a vibration damping structure, including a pump body, a plunger assembly, and a one-way valve assembly. One end of the pump body is an oil outlet, and the other end is an oil inlet. The pump body is hollow and has a cavity for accommodating the one-way valve assembly. The cavity is connected to the oil outlet. The plunger assembly includes a plunger movably disposed in the pump body. The pump body has oil passage holes along its length for communicating with the cavity and the plunger shaft hole, respectively. The one-way valve assembly includes a steel ball movably disposed in the cavity to block or move away from the oil passage hole when the plunger assembly is running. The cavity is provided with a reset member for driving the steel ball to move and reset so that the steel ball re-closes the opening of the oil passage hole, and a vibration damping structure for working in conjunction with the reset member to reduce the vibration force and noise generated by the collision between the steel ball and the inner peripheral wall of the opening of the oil passage hole when the steel ball resets.

[0005] The advantages of adopting the above technical solution are as follows: In the above technology, by setting a reset component in the cavity and cooperating with the shock absorption structure, when the steel ball is driven by the reset component to reset and close the oil passage, the shock absorption structure can effectively absorb the impact force generated by the collision between the steel ball and the inner peripheral wall at the opening of the oil passage, reducing vibration force and noise. The coordinated design of the plunger assembly, the one-way valve assembly and the shock absorption structure not only ensures the stability of the one-way flow of oil, but also structurally weakens the vibration problem caused by high-frequency collisions, improves the smoothness of the oil pump operation, extends the service life of the equipment, and reduces noise pollution in the working environment, meeting the low vibration and low noise requirements of industrial equipment.

[0006] The present invention further comprises: the reset component includes a reset spring disposed in the cavity, the reset spring being frustoconical in shape, the reset spring being coaxially disposed with the shaft hole at the oil outlet end, the beginning end of the reset spring being sleeved on the steel ball and the diameter of the beginning end of the reset spring being smaller than the diameter of the steel ball, and the end end of the reset spring being connected to the inner wall of the cavity.

[0007] The advantages of adopting the above technical solution are as follows: the reset component in the above technology adopts a frustoconical reset spring and is coaxially set with the oil outlet shaft hole. Its starting end is sleeved on the steel ball and its diameter is smaller than the steel ball, and its end is connected to the inner wall of the cavity. This structure enables the reset spring to apply stable force along the axial direction during compression and reset, avoids the steel ball from shifting during reset, and ensures that the steel ball and the opening of the oil passage are accurately aligned. The frustoconical design can provide a gradual elastic force. Combined with the spherical structure of the steel ball, it reduces the rigid contact area between the spring and the steel ball, further reduces the impact force during collision, improves reset stability, simplifies the assembly difficulty of the one-way valve assembly, and enhances the reliability of the overall structure.

[0008] The present invention further comprises: the shock-absorbing structure including two oppositely arranged shock-absorbing springs, the two shock-absorbing springs being respectively arranged on both sides of the steel ball, the ends of the two shock-absorbing springs being connected to the inner wall of the cavity and the ends of the shock-absorbing springs being arranged near the oil passage hole, a connecting coil being connected between the beginning ends of the two shock-absorbing springs, the connecting coil being sleeved on the steel ball and the connecting coil being arranged near the beginning end of the return spring, the diameter of the connecting coil being larger than the diameter of the beginning end of the return spring and smaller than the diameter of the steel ball.

[0009] The advantages of adopting the above technical solution are as follows: In the above technology, two shock-absorbing springs are arranged opposite each other on both sides of the steel ball, with their ends connected to the inner wall of the cavity and close to the oil passage hole, and their beginnings sleeved on the steel ball through a connecting coil. The diameter of the connecting coil is adapted to the steel ball and the return spring. This structure utilizes symmetrically distributed shock-absorbing springs to synchronously buffer when the steel ball returns to its original position, absorbing collision energy from multiple angles. The connecting coil restricts the lateral displacement of the steel ball, forming a two-way elastic constraint with the return spring, so that the steel ball maintains a stable trajectory during the opening and closing process. Compared with a single buffer structure, the double-sided shock-absorbing springs can evenly disperse the impact force, reduce the skewed collision between the steel ball and the oil passage hole, significantly improve the shock absorption and noise reduction effect, and have a compact structure and occupy little space.

[0010] The present invention further includes: a guide shaft is provided on the inner wall of the cavity corresponding to the positions of the two shock-absorbing springs, and the two shock-absorbing springs are sleeved on their respective guide shafts.

[0011] The advantages of adopting the above technical solution are as follows: In the above technology, a guide shaft is set on the inner wall of the cavity corresponding to the shock-absorbing spring, and the shock-absorbing spring is sleeved on the guide shaft. This design provides precise guidance for the extension and contraction of the shock-absorbing spring, avoids the spring from twisting or deviating when compressed, and ensures that the shock-absorbing force is effectively transmitted along the return direction of the steel ball. The cooperation between the guide shaft and the shock-absorbing spring enhances the stability of the shock-absorbing structure, so that the steel ball is always uniformly buffered in the high-frequency reciprocating motion, reduces the problem of shock absorption failure caused by abnormal spring deformation, improves the reliability and service life of the shock-absorbing structure, and simplifies the positioning difficulty when installing the spring.

[0012] The present invention further comprises: a shock-absorbing pad is attached to the inner peripheral wall of the oil passage opening; a connecting groove is circumferentially opened on the inner wall of the cavity corresponding to the position of the oil passage; the shock-absorbing pad is bent toward the connecting groove to form an attachment pad; the attachment pad is attached to the inner wall of the cavity and bent toward the connecting groove to form a fastening ring; the fastening ring is tightly fitted with the connecting groove; and the shock-absorbing pad, the attachment pad, and the fastening ring are integrally connected and made of rubber.

[0013] The advantages of adopting the above technical solution are as follows: In the above technology, a rubber shock-absorbing pad is attached to the inner circumferential wall of the oil passage opening. The installation is achieved through the expansion and tightening of the connecting groove, the attached pad and the fastening ring. The elastic properties of the rubber material can directly absorb the collision energy of the steel ball, reducing rigid impact. The integrated bending structure of the attached pad and the fastening ring enhances the connection strength between the shock-absorbing pad and the inner wall of the cavity, preventing the problem of falling off due to long-term vibration. The circumferential shock-absorbing pad forms a flexible sealing boundary, which, in conjunction with the spherical contact of the steel ball, improves the sealing performance when the oil passage is closed while absorbing vibration. Moreover, the rubber material is oil-resistant and corrosion-resistant, suitable for the working environment of the heater oil pump, and takes into account shock absorption, sealing and durability.

[0014] The present invention further comprises: the shock-absorbing pad is arranged in a circumferential direction and its shaft hole is a transition hole for communicating with the oil passage hole; the radial cross section of the transition hole is tapered; the opening of the transition hole near the steel ball is an oil passage port; the diameter of the oil passage port is smaller than the diameter of the steel ball; and the outer peripheral wall of the steel ball and the inner peripheral wall of the oil passage port are abutted and fitted together.

[0015] The advantages of adopting the above technical solution are as follows: the radial cross-section of the transition hole of the shock-absorbing pad is conical, the diameter of the oil passage is smaller than that of the steel ball, and it abuts against the outer peripheral wall of the steel ball. The conical transition hole can guide the steel ball during the repositioning process, guiding the steel ball to accurately fit the oil passage along the axis, reducing eccentric collisions caused by angular deviations; the abutting fit between the oil passage and the steel ball seals the oil while using the conical surface to evenly distribute the impact force to all parts of the shock-absorbing pad, enhancing the buffering effect. This structure achieves efficient vibration reduction and noise reduction while optimizing the oil flow path. The conical transition hole can reduce the resistance when the oil passes through, improve the oil pump's oil delivery efficiency, and the improved sealing performance reduces the risk of oil leakage, thus improving the safety of equipment operation. Attached Figure Description

[0016] Figure 1 This is a partial cross-sectional view of the present invention;

[0017] Figure 2 for Figure 1 A magnified view of part A in the middle. Detailed Implementation

[0018] This utility model provides a heater oil pump with a shock-absorbing structure, including a pump body 1, a plunger assembly, and a one-way valve assembly. One end of the pump body 1 is an oil outlet 11, and the other end is an oil inlet 12. The pump body 1 has a hollow cavity 13 for housing the one-way valve assembly, and the cavity 13 is connected to the oil outlet 11. The plunger assembly includes a plunger movably disposed within the pump body 1. The pump body 1 has an oil passage hole 14 along its length for communicating with the cavity 13 and the plunger shaft hole, respectively. The one-way valve assembly includes a steel ball 15 movably disposed within the cavity 13 to block or move away from the oil passage hole 14 during plunger assembly operation. The cavity 13 is provided with a mechanism for driving the steel ball 15 to reposition and re-close the oil passage hole 14. The system includes a reset component at the opening of the oil hole 14 and a damping structure that works in conjunction with the reset component to reduce the vibration and noise generated by the collision between the steel ball 15 and the inner peripheral wall of the opening of the oil hole 14 when the steel ball 15 is reset. The reset component includes a reset spring 2 disposed in the cavity 13. The reset spring 2 is frustoconical and coaxial with the shaft hole of the oil outlet 11. The starting end of the reset spring 2 is sleeved on the steel ball 15, and the diameter of the starting end of the reset spring 2 is smaller than the diameter of the steel ball 15. The end of the reset spring 2 is connected to the inner wall of the cavity 13. The damping structure includes two damping springs 21 disposed opposite to each other. The two damping springs 21 are disposed on both sides of the steel ball 15. Both ends of the damping springs 21 are connected to the inner wall of the cavity 13, with the ends of the damping springs 21 positioned near the oil passage hole 14. A connecting coil 22 is connected between the beginning ends of the two damping springs 21. The connecting coil 22 is sleeved on the steel ball 15 and positioned near the beginning end of the return spring 2. The diameter of the connecting coil 22 is larger than the diameter of the beginning end of the return spring 2 and smaller than the diameter of the steel ball 15. Guide shafts 23 are provided on the inner wall of the cavity 13 corresponding to the positions of the two damping springs 21, and the two damping springs 21 are sleeved on their respective corresponding guide shafts 23. A damping pad 3 is attached to the inner circumferential wall of the opening of the oil passage hole 14. The inner wall of the cavity 13 is circumferentially opened at the position corresponding to the oil passage hole 14. The device has a connecting groove 16. The shock-absorbing pad 3 is bent towards the connecting groove 16 to form an adhesive pad 31. The adhesive pad 31 is attached to the inner wall of the cavity 13 and is bent towards the connecting groove 16 to form a fastening ring 32. The fastening ring 32 is tightly fitted with the connecting groove 16. The shock-absorbing pad 3, the adhesive pad 31, and the fastening ring 32 are integrally connected and made of rubber. The shock-absorbing pad 3 is circumferentially arranged and its shaft hole is a transition hole 33 for communicating with the oil passage hole 14. The radial cross-section of the transition hole 33 is tapered. The opening of the transition hole 33 near the steel ball 15 is an oil passage 331. The diameter of the oil passage 331 is smaller than the diameter of the steel ball, and the outer peripheral wall of the steel ball abuts against the inner peripheral wall of the oil passage 331.

[0019] The one-way valve assembly and plunger assembly mentioned above are existing technologies and therefore will not be identified or illustrated in the accompanying drawings.

[0020] The foregoing has shown and described the basic principles and main features of this utility model, as well as its advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications may be made to this utility model without departing from its spirit and scope. All such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A heater oil pump with a shock-absorbing structure, comprising a pump body, a plunger assembly, and a one-way valve assembly, wherein one end of the pump body is an oil outlet end and the other end is an oil inlet end, the pump body is hollowly provided with a cavity for accommodating the one-way valve assembly, the cavity being connected to the oil outlet end, the plunger assembly comprising a plunger movably disposed in the pump body, the pump body having an oil passage hole along its length for communicating with the cavity and the plunger shaft hole respectively, and the one-way valve assembly comprising a steel ball movably disposed in the cavity to block or move away from the oil passage hole during the operation of the plunger assembly, characterized in that: The cavity is equipped with a reset component for driving the steel ball to re-close the oil passage opening, and a damping structure that works in conjunction with the reset component to reduce the vibration and noise generated by the collision between the steel ball and the inner wall of the oil passage opening during reset. The reset component includes a reset spring in the cavity, which is frustoconical in shape and coaxial with the shaft hole at the oil outlet. The starting end of the reset spring is sleeved on the steel ball, and its diameter is smaller than that of the steel ball. The ending end of the reset spring is connected to the inner wall of the cavity. The damping structure includes two damping springs arranged opposite each other on both sides of the steel ball. The ending ends of both damping springs are connected to the inner wall of the cavity and are close to the oil passage. A connecting coil is connected between the starting ends of the two damping springs. The connecting coil is sleeved on the steel ball and is close to the starting end of the reset spring. The diameter of the connecting coil is larger than that of the starting end of the reset spring and smaller than that of the steel ball.

2. The heater-oil pump having a damping structure according to claim 1, characterized by: Guide shafts are provided on the inner wall of the cavity corresponding to the positions of the two damping springs, and the two damping springs are sleeved on their respective guide shafts.

3. The heater-oil pump having a damping structure according to claim 1, characterized by: A shock-absorbing pad is attached to the inner circumferential wall of the oil passage opening. A connecting groove is circumferentially opened on the inner wall of the cavity corresponding to the position of the oil passage. The shock-absorbing pad is bent towards the connecting groove to form a mounting pad. The mounting pad is attached to the inner wall of the cavity and bent towards the connecting groove to form a fastening ring. The fastening ring is tightly fitted with the connecting groove. The shock-absorbing pad, the mounting pad, and the fastening ring are integrally connected and made of rubber.

4. The heater-oil pump having a damping structure according to claim 3, characterized by: The shock-absorbing pad is arranged in a ring and its shaft hole is a transition hole for communicating with the oil passage hole. The radial cross section of the transition hole is tapered. The opening of the transition hole near the steel ball is the oil passage port. The diameter of the oil passage port is smaller than the diameter of the steel ball, and the outer peripheral wall of the steel ball and the inner peripheral wall of the oil passage port are abutted and fitted together.

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