High-pressure airless spraying machine with material leakage protection function
By introducing anti-splatter baffles and multiple material chamber structures into the high-pressure airless sprayer, mechanical failures caused by paint leakage are solved, the equipment is protected and has maintenance prompts, and the reliability of the equipment is improved.
Patent Information
- Application Number
- CN202520197107.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-08
- Publication Date
- 2026-01-20
- Estimated Expiration
- 2035-02-08
AI Technical Summary
Paint leakage in high-pressure airless sprayers can lead to problems such as burnt-out geared motors and wear of parts, especially mechanical failures such as gear jamming caused by paint splatter.
The design incorporates splash guards and multiple material chambers to prevent paint from splashing and to promptly drain leaked paint, avoiding contact between paint and critical components. Leaked paint is guided to a safe location via three through-holes.
It effectively prevents paint splashing and leakage, avoids burnout of the geared motor and wear of parts, prompts maintenance, and improves equipment reliability.
Smart Images
Figure CN223811145U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a high pressure airless spraying machine with material leakage protection function. BACKGROUND
[0002] The high pressure airless spraying machine is a spraying instrument that directly pumps paint out by reciprocating motion of the plunger rod of the plunger pump driven by the shaft end gear of the speed reducer through the large gear and connecting rod. During the reciprocating motion of the plunger rod, paint leakage may occur due to sealing problems. The leaked paint flows to the vicinity of the speed reducer inside the casing of the spraying machine, causing the risk of burning the speed reducer. In addition, when the paint leakage is serious, paint splashing occurs at the rear end of the plunger rod, and the splashed paint directly reaches the connecting part of the plunger rod and the connecting rod or the large gear, causing accelerated wear of the parts or gear jamming, i.e. failure of the spraying machine. SUMMARY
[0003] In view of the above problems, the utility model provides a high pressure airless spraying machine with material leakage protection function.
[0004] To achieve the above purpose, the utility model provides a high pressure airless spraying machine with material leakage protection function, which comprises a casing, a speed reducer and a plunger pump installed on the casing. A positioning seat is arranged inside the casing. The positioning seat is arranged from the speed reducer to the plunger pump. A large gear is arranged on the positioning seat. A connecting rod is arranged above the large gear. The connecting end of the connecting rod and the large gear is arranged offset to the axis of the large gear. The rear end of the plunger rod of the plunger pump is connected to the shaft end gear of the speed reducer through the connecting rod and the large gear. A splash-proof baffle is arranged at the position of the plunger rod close to the connecting rod. A first material cavity is formed at one end of the positioning seat close to the plunger pump. A first through hole is arranged at the bottom of the first material cavity. The first through hole penetrates the casing.
[0005] Further, the rear end of the plunger rod is in the shape of a ball head. The splash-proof baffle has a central hole matched with the ball head and a plurality of narrow slits uniformly distributed along the circumference of the central hole. Small round holes are formed at the end of the narrow slits away from the central hole.
[0006] Further, the first through hole is a square hole with a size of 22*25mm. The height of the sidewall of the first material cavity is lower than the upper surface of the large gear.
[0007] Further, a second material cavity is formed inside the casing. The second material cavity is close to the first material cavity and lower than the first material cavity. A second through hole is formed at the bottom of the second material cavity.
[0008] Further, a third material cavity is formed in the casing, the third material cavity is close to the speed reducer motor and connected with the second material cavity, the third material cavity is lower than the second material cavity, and a third through hole is formed in the bottom of the third material cavity.
[0009] The utility model has the beneficial effects that relative to prior art:
[0010] 1. The design of the anti-splashing baffle prevents paint from splashing on the plunger rod, connecting rod or gear.
[0011] 2. The design of the three material cavities provides three layers of protection, timely discharges the leaked paint through the three through holes, avoids burning the speed reducer motor, and also serves as a reminder for the staff to perform maintenance. BRIEF DESCRIPTION OF DRAWINGS
[0012] Figure 1 It is a perspective view of the high-pressure airless sprayer with the material leakage protection function.
[0013] Figure 2 It is a sectional view of the high-pressure airless sprayer with the material leakage protection function.
[0014] Figure 3 It is an internal structure diagram of the high-pressure airless sprayer with the material leakage protection function.
[0015] Figure 4 It is a schematic diagram of the anti-splashing baffle.
[0016] Figure 5 It is a schematic diagram of the positioning seat and casing. Figure 1
[0017] Figure 6 It is a schematic diagram of the positioning seat and casing. Figure 2
[0018] In the figure: 1, casing; 11, second material cavity; 111, second through hole; 12, third material cavity; 121, third through hole; 2, speed reducer motor; 21, shaft end gear; 3, positioning seat; 31, first material cavity; 311, first through hole; 4, gear; 5, connecting rod; 6, anti-splashing baffle; 61, center hole; 62, narrow slit; 7, plunger pump; 71, plunger rod. DETAILED DESCRIPTION
[0019] As Figures 1-6 The utility model discloses a high pressure airless spray machine with material leakage protection function, including the casing 1 and the reduction motor 2 of installing in casing 1, plunger pump 7, be equipped with a locating seat 3 in casing 1, the locating seat 3 is set up by the direction of plunger pump 7 to reduction motor 2, be equipped with a rotatable gear wheel 4 on the locating seat 3, be equipped with a connecting rod 5 above gear wheel 4, the connecting end of connecting rod 5 and gear wheel 4 is set up to the axis of gear wheel 4, the rear end of plunger rod 71 of plunger pump 7 is connected in drive through connecting rod 5, gear wheel 4 and the axle end gear 21 of reduction motor 2, plunger rod 71 is still configured with a splash guard 6 in the position close to connecting rod 5, the first material cavity 31 is formed to the one end close to plunger pump 7 of locating seat 3, the bottom of first material cavity 31 is equipped with first through -hole 311, and first through -hole 311 is set up through casing 1, the rear end of plunger rod 71 is spherical, and the splash guard 6 has the central hole 61 matched with the ball head and the multiple narrow slit 62 along the circumference of central hole 61, and the one end of narrow slit 62 away from central hole 61 forms small round hole, so that the splash guard 6 is installed in the ball head end of plunger rod 71, and the both are not easy to separate simultaneously, first through -hole 311 is square hole, and the size is 22 * 25mm, and the sidewall height of first material cavity 31 is lower than the upper surface of gear wheel 4, still form second material cavity 11 in casing 1, and second material cavity 11 is close to first material cavity 31 and is lower than first material cavity 31, and the bottom of second material cavity 11 is processed with second through -hole 111, still form third material cavity 12 in casing 1, and third material cavity 12 is close to reduction motor 2 and is connected with second material cavity 11, and third material cavity 12 is lower than second material cavity 11, and the bottom of third material cavity 12 is processed with third through -hole 121.
[0020] The high pressure airless spray machine has the design of the splash guard, when the leaked coating splashes, the splash guard plays a blocking role, to avoid that the coating is directly sprayed on the plunger rod, the connecting rod or the gear wheel, the high pressure airless spray machine has the design of the three material cavities, forms three protections, and the leaked coating is discharged through the three through holes in time, avoids burning the reduction motor, and also can play the purpose of prompting the staff to overhaul.
[0021] Specific use, for the convenience understanding of the utility model, carries out the description in combination with the drawings,
[0022] When serious leakage, i.e. paint splashing, occurs, the anti-splashing baffle plays a blocking role to avoid paint from being directly sprayed on the plunger rod, connecting rod or large gear; when slight paint leakage occurs, the paint will flow in the first material cavity and flow out through the first through hole, if the first through hole is blocked, the leaked paint will overflow the first material cavity and then flow in the second material cavity and flow out through the second through hole, if the second through hole is blocked, the leaked paint will overflow the second material cavity and then flow in the third material cavity and flow out through the third through hole; because of the existence of the three-level protection and the anti-splashing baffle, the high-pressure airless sprayer basically will not have the conditions of the burned-down speed reducer, accelerated wear of parts or gear jamming.
[0023] The preferred embodiments of the present application have been described above, but the present application is not limited to the above-mentioned embodiments, and various modifications and changes can be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A high-pressure airless sprayer with material leakage prevention function, comprising a casing (1), a speed reduction motor (2) and a plunger pump (7) installed on the casing (1), wherein a positioning seat (3) is arranged in the casing (1) and extends from the speed reduction motor (2) to the plunger pump (7), a large gear (4) is arranged on the positioning seat (3), a connecting rod (5) is arranged above the large gear (4), the connecting end of the connecting rod (5) and the large gear (4) is arranged away from the axis of the large gear (4), and the rear end of a plunger rod (71) of the plunger pump (7) is in driving connection with the connecting rod (5), the large gear (4) and a shaft end gear (21) of the speed reduction motor (2), characterized in that: The plunger rod (71) is further provided with a splash-proof baffle (6) near the connecting rod (5), the positioning seat (3) is formed with a first material cavity (31) at one end near the plunger pump (7), the bottom of the first material cavity (31) is provided with a first through hole (311), and the first through hole (311) is arranged through the shell (1). 2. The high-pressure airless sprayer with a material leakage prevention function according to claim 1, characterized in that: The rear end of the plunger rod (71) is in a spherical head shape, the splash-proof baffle (6) has a center hole (61) matched with the spherical head and a plurality of narrow slits (62) uniformly distributed along the circumference of the center hole (61), and the narrow slits (62) are formed with small round holes at the ends away from the center hole (61).
3. The high-pressure airless sprayer with a material leakage prevention function according to claim 1 or 2, characterized in that: The first through hole (311) is a square hole with a size of 22*25mm, and the sidewall height of the first material cavity (31) is lower than the upper surface of the gear (4).
4. The high-pressure airless sprayer with a material leakage prevention function according to claim 3, characterized in that: The shell (1) is further formed with a second material cavity (11), the second material cavity (11) is close to and lower than the first material cavity (31), and the bottom of the second material cavity (11) is processed with a second through hole (111).
5. The high-pressure airless sprayer with a material leakage prevention function according to claim 4, characterized in that: The shell (1) is further formed with a third material cavity (12), the third material cavity (12) is close to the reduction motor (2) and connected with the second material cavity (11), the third material cavity (12) is lower than the second material cavity (11), and the bottom of the third material cavity (12) is processed with a third through hole (121).