Airless high-pressure sprayer

Abstract

The utility model discloses an airless high-pressure sprayer which comprises a plunger pump, and the plunger pump comprises a driving assembly, a swash plate assembly and a pump body. A feeding channel and a discharging channel are arranged in the pump body, and a piston assembly is arranged between the feeding channel and the discharging channel. The swash plate assembly is connected between the pump main body and the driving assembly, and a swash plate of the swash plate assembly is rotationally mounted in the swash plate assembly; the driving assembly is used for driving the swash plate to rotate; the swash plate is connected with the piston assembly; when the swash plate rotates, the swash plate can drive the piston assembly to move back and forth in the pump body, and therefore liquid in the feeding channel is pumped into the discharging channel. According to the plunger pump of the airless high-pressure sprayer, the piston is driven to move through the swash plate assembly, shaking can be effectively avoided, noise is greatly reduced, and therefore the use experience of a user is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of spray equipment, more specifically to an airless high-pressure sprayer. Background Art

[0002] High-pressure airless spraying is a relatively advanced spraying operation method. It uses a high-pressure plunger pump to continuously transport paint into a closed paint pipeline, thereby forming high pressure in a closed space, and then spraying the paint through a small spray hole to form a fan-shaped mist to achieve an atomization effect. Since there is no air mixed in the paint, and the paint transfer efficiency and work production efficiency are higher, a higher density coating is formed on the attached surface, making the surface quality of airless spraying significantly better than that of air spraying.

[0003] The invention patent with patent announcement number CN103298564B discloses a control valve for pressure regulation of an airless sprayer. The pumping mechanism of the airless sprayer is driven by a swinging drive device, which includes a connecting rod, a bearing, a rod and a sleeve. The rotation of the rod generates a linear motion of the ball of the connecting rod through the swinging of the sleeve. The ball is mechanically connected to the socket of the piston. Therefore, the connecting rod directly activates the piston in both the forward position and the retracted position. The piston advances and retracts in the piston sleeve in the housing. This airless sprayer drives the connecting rod to move linearly by the swinging of the sleeve, thereby driving the piston to move. During use, it is easy to cause the sprayer to shake and make a loud noise, affecting user use. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide an airless high-pressure sprayer, the plunger pump of the airless high-pressure sprayer drives the piston to move through a swash plate assembly, has a simple structure, can effectively avoid shaking, and greatly reduces noise, thereby improving the user experience.

[0005] The technical solution of the utility model is to provide an airless high-pressure sprayer with the following structure, including a plunger pump, wherein the plunger pump includes a driving assembly, a swash plate assembly and a pump body; a feed channel and a discharge channel are arranged in the pump body, and a piston assembly is arranged between the feed channel and the discharge channel; the swash plate assembly is connected between the pump body and the driving assembly, and the swash plate of the swash plate assembly is rotatably installed in the swash plate assembly; the driving assembly is used to drive the swash plate to rotate; the swash plate is connected to the piston assembly; when the swash plate rotates, the swash plate can drive the piston assembly to move back and forth in the pump body, thereby drawing the liquid in the feed channel into the discharge channel.

[0006] After adopting the above structure, the airless high-pressure sprayer of the utility model has the following advantages compared with the prior art:

[0007] Since the plunger pump of the airless high-pressure sprayer of the utility model includes a swash plate assembly, when the driving assembly drives the swash plate to rotate, the swash plate can drive the piston assembly to move back and forth in the pump body, and the inclined surface of the swash plate abuts against the piston assembly, thereby drawing the liquid in the feed channel into the discharge channel; the plunger pump has a simple structure, can effectively avoid shaking, and greatly reduces noise, thereby improving the user experience.

[0008] As an improvement, the swash plate assembly further includes a swash plate housing, and the swash plate includes a swash plate body and a thrust bearing; the swash plate housing is fixedly connected between the drive assembly and the pump body, and the swash plate body is rotatably connected in the swash plate housing, and the swash plate body is connected to the drive assembly; the swash plate body is provided with an inclined surface on one side close to the piston assembly, and the thrust bearing is mounted on the inclined surface, and the thrust bearing is in an inclined state, and one side of the thrust bearing abuts against the piston assembly; when the drive assembly drives the swash plate body to rotate, the swash plate body can drive the thrust bearing to rotate, thereby pushing the piston assembly to move back and forth. After adopting this structure, the thrust bearing is mounted on the inclined surface of the swash plate body, so that the thrust bearing is in an inclined state, so that the swash plate body drives the thrust bearing to rotate, and the inclined thrust bearing can push the piston assembly to move back and forth, with a simple structure and good transmission effect.

[0009] The swash plate assembly also includes a swash plate housing and a thrust bearing; the swash plate housing is fixedly connected between the drive assembly and the pump body, the thrust bearing is rotatably connected in the swash plate housing, and the thrust bearing is connected to the drive assembly; the side of the swash plate away from the inclined surface is a plane, and the driving side of the thrust bearing abuts against the plane of the swash plate; when the drive assembly drives the thrust bearing to rotate, the thrust bearing can drive the swash plate to rotate. After adopting this structure, the swash plate is driven to rotate by the thrust bearing, the structure is simple, and the transmission effect is good.

[0010] As an improvement, the swash plate body is connected to the driving assembly; the swash plate body is provided with a connecting shaft, and the thrust bearing is sleeved outside the connecting shaft. After adopting this structure, the assembly structure of the thrust bearing and the swash plate body is simple and convenient to assemble.

[0011] As an improvement, the edge of the inclined plate body is provided with a flange, and the flange surrounds the outer side of the inclined surface. After adopting this structure, the flange has a protective effect on the thrust bearing, and the structure is more reliable.

[0012] As an improvement, the driving assembly includes a driving housing, a driver and a transmission assembly; the swash plate housing is fixedly connected between the driving housing and the pump body; the transmission assembly is installed in the driving housing, the driver is installed on the side of the driving housing away from the swash plate housing, the power output end of the driver is connected to the driving assembly; the output end of the transmission assembly is connected to the swash plate body through a rotating shaft. With this structure, the driving assembly has a simple structure and is easy to assemble.

[0013] As an improvement, the transmission assembly includes a driving gear, a driven gear and a gear ring; the gear ring is installed in the driving housing; the driving gear is connected to the output shaft of the driver and is located in the middle of the gear ring; at least two driven gears are provided, the driven gear is installed between the driving gear and the gear ring, one side of the driven gear is meshed with the gear ring, and the other side of the driven gear is meshed with the driving gear; a gear shaft is provided in the middle of the driven gear, and the gear shaft is connected to the rotating shaft; the driving gear drives the driven gear to rotate along the inner circumference of the gear ring, thereby driving the rotating shaft to rotate. After adopting this structure, the transmission assembly has a simple structure and a relatively stable transmission.

[0014] As an improvement, the side of the rotating shaft close to the gear ring is exposed outside the swash plate housing and a connecting portion is provided at the end of the rotating shaft, and the end surface of the connecting portion close to the gear ring is provided with the gear shaft, and the driven wheel is rotatably connected to the gear shaft. With this structure, the connection structure between the rotating shaft and the driven wheel is simple, and the driven wheel is more convenient to install.

[0015] As an improvement, a piston cavity is provided in the pump body, and the piston cavity is connected with both the feed channel and the discharge channel; the piston assembly includes a piston rod and a return elastic member, one end of the piston rod extends into the piston cavity, the other end of the piston rod is exposed outside the pump body and the end face of the piston rod abuts against the thrust bearing; the return elastic member is supported between the other end of the piston rod and the pump body, and the return elastic member gives the other end of the piston rod a thrust to move away from the pump body; when the inclined plate body rotates, the thrust bearing will push the piston rod to slide back and forth, thereby drawing the liquid in the feed channel into the piston cavity, and then pushing the liquid from the piston cavity into the discharge channel. After adopting this structure, the pump body has a simple structure, the piston rod is always in contact with the thrust bearing under the action of the return elastic member, and the thrust bearing drives the piston rod better.

[0016] As an improvement, the feed channel is provided with a feed check valve, and the liquid can flow from the feed channel into the piston cavity in one direction; the discharge channel is provided with a discharge check valve, and the liquid can flow from the piston cavity into the discharge channel in one direction. With this structure, under the action of the feed check valve and the discharge check valve, the liquid can only flow from the feed channel to the piston cavity, and then flow from the piston cavity to the discharge channel, thereby preventing the liquid from flowing in the opposite direction.

[0017] As an improvement, the end of the piston rod close to the inclined surface is provided with an arc surface, and the arc surface abuts against the inclined surface. After adopting this structure, the arc surface abuts against the inclined surface, making the connection between the two more flexible.

[0018] As an improvement, the return elastic member is a return spring, which is sleeved outside the piston rod, one end of which abuts against the end face of the pump body, and a limiting convex ring is provided on the outer wall of the other end of the piston rod, and the other end of the return spring abuts against the limiting convex ring. With this structure, the return spring is easy to install and has a good return effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the airless high-pressure sprayer of the utility model.

[0020] Figure 2 The utility model is a schematic diagram of the explosion structure of the airless high-pressure sprayer.

[0021] Figure 3 The utility model is a cross-sectional structural schematic diagram of the airless high-pressure sprayer.

[0022] Figure 4 It is a three-dimensional structural schematic diagram of the inclined disk body of the airless high-pressure sprayer of the utility model.

[0023] Figure 5 It is a partial three-dimensional structural schematic diagram of the airless high-pressure sprayer of the utility model.

[0024] Figure 6 It is a partial three-dimensional structural schematic diagram of the driving assembly of the airless high-pressure sprayer of the utility model.

[0025] As shown in the figure: 1. drive assembly, 101. drive housing, 102. driver, 103. rotating shaft, 104. driving gear, 105. driven gear, 106. gear ring, 107. connecting part, 108. gear shaft, 2. swash plate assembly, 201. swash plate housing, 202. swash plate body, 203. thrust bearing, 204. flange, 205. connecting shaft, 206. inclined surface, 208. shaft hole, 209. sealing ring, 210. support seat, 3. pump body, 301. pump body, 302. pump cover, 303. feed channel, 304. discharge channel, 305. piston chamber, 4. piston rod, 401. arc surface, 402. limiting convex ring, 5. return spring, 6. sealing member, 7. feed check valve, 8. discharge check valve. Implementation

[0026] In order to better understand the present application, a more detailed description of various aspects of the present application will be made with reference to the accompanying drawings. It should be understood that these detailed descriptions are only descriptions of exemplary embodiments of the present application, and do not limit the scope of the present application in any way. Throughout the specification, the same figure numerals refer to the same elements.

[0027] In the drawings, the thickness, size and shape of objects have been slightly exaggerated for ease of explanation. The drawings are only examples and are not drawn strictly to scale.

[0028] It should also be understood that the terms “comprises,” “including,” “has,” and “contains,” when used in this specification, indicate the presence of the described features, integers, steps, operations, elements, and / or parts, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, parts, and / or combinations thereof.

[0029] like Figures 1 to 5 As shown, the present application discloses an airless high-pressure sprayer including a plunger pump, wherein the plunger pump includes a drive assembly 1, a swash plate assembly 2 and a pump body 3. The swash plate assembly 2 is disposed between the drive assembly 1 and the pump body 3.

[0030] The pump body 3 includes a pump body 301 and a pump cover 302, and the pump cover 302 is connected to one end of the pump body 301. The pump body 301 is provided with an inlet channel 303 and an outlet channel 304, and a piston chamber 305 is provided between the pump body 301 and the pump cover 302. The inlet channel 303 is connected to the piston chamber 305, and the piston chamber 305 is connected to the outlet channel 304. A piston assembly is connected to the piston chamber 305, and the piston assembly includes a piston rod 4 and a return elastic member, and the return elastic member is a return spring 5. One end of the piston rod 4 extends into the piston chamber 305 through the piston hole on the pump cover 302, and a sealing member 6 is provided between the outer wall of the piston rod 4 and the inner wall of the piston hole, and the sealing member 6 is used to seal the gap between the piston rod 4 and the piston hole. The return spring 5 is sleeved outside the piston rod 4.

[0031] The swash plate assembly 2 comprises a swash plate housing 201 and a swash plate. The swash plate comprises a swash plate body 202 and a thrust bearing 203. The thrust bearing 203 is a plane bearing, which is a prior art. The specific structure of the thrust bearing 203 is not described in detail. The swash plate housing 201 is fixedly connected between the drive assembly 1 and the pump body 3. The swash plate body 202 and the thrust bearing 203 are both installed in the swash plate housing 201. The swash plate body 202 is rotatably installed in the swash plate housing 201, and the swash plate body 202 is connected to the drive assembly 1. The swash plate body 202 is provided with an inclined surface 206 on the side close to the piston rod 4, and a connecting shaft 205 is provided in the middle of the inclined surface 206. The thrust bearing 203 is sleeved outside the connecting shaft 205 and the side of the thrust bearing 203 away from the piston rod 4 abuts against the inclined surface 206. The thrust bearing 203 is in an inclined state. The edge of the swash plate body 202 is provided with a flange 204, and the flange 204 surrounds the outer side of the inclined surface 206. The other side of the thrust bearing 203 abuts against the other end of the piston rod 4. The end of the piston rod 4 close to the thrust bearing 203 is provided with an arc surface, and the arc surface abuts against the end surface of the thrust bearing 203.

[0032] One end of the return spring 5 abuts against the pump cover 302, and a limiting convex ring is provided on the outer wall of the other end of the piston rod 4, and the other end of the return spring 5 abuts against the limiting convex ring. The return spring 5 gives the other end of the piston rod 4 a thrust to move away from the pump cover 302. When the swash plate body 202 rotates, the inclined thrust bearing 203 pushes the piston rod 4 to slide back and forth, thereby drawing the liquid in the feed channel 303 into the piston cavity 305, and then pushing the liquid from the piston cavity 305 into the discharge channel 304. The feed channel 303 is provided with a feed check valve 7, and the liquid can flow from the feed channel 303 into the piston cavity 305 in one direction; the discharge channel 304 is provided with a discharge check valve 8, and the liquid can flow from the piston cavity 305 into the discharge channel 304 in one direction.

[0033] like Figure 6 As shown, the driving assembly 1 comprises a driving housing 101, a driver 102 and a transmission assembly. The driving housing 101 is connected to the pump body 3 through fasteners, the transmission assembly is installed in the driving housing 101, the driver 102 is installed on the side of the driving housing 101 away from the swash plate housing 201, the power output end of the driver 102 is connected to the transmission assembly, and the driver 102 is a motor. The output end of the transmission assembly is connected to the swash plate body 202 through a rotating shaft 103. A shaft hole 208 is provided on the side of the swash plate housing 201 close to the driving assembly 1, and the rotating shaft 103 passes through the shaft hole 208 and is connected to the swash plate body 202. A sealing ring 209 is provided in the swash plate housing 201 and located on the inner side of the shaft hole 208, and the sealing ring 209 is sleeved outside the rotating shaft 103. A support seat 210 is provided between the swash plate body and the sealing ring 209.

[0034] The transmission assembly includes a driving gear 104, a driven gear 105 and a ring gear 106. The ring gear 106 is installed in the driving housing 101. The driving gear 104 is connected to the output shaft of the driver 102 and is located in the middle of the ring gear 106. There are at least two driven gears 105, which are installed between the driving gear 104 and the ring gear 106. One side of the driven gear 105 is meshed with the ring gear 106, and the other side of the driven gear 105 is meshed with the driving gear 104. The side of the rotating shaft 103 close to the ring gear 106 is exposed outside the swash plate housing 201, and a connecting portion 107 is provided at the end of the rotating shaft 103. A gear shaft 108 is provided on the end surface of the connecting portion 107 close to the ring gear 106, and the driven wheel is rotatably connected to the gear shaft 108. In this specific embodiment, there are three driven wheels, and correspondingly, there are also three gear shafts 108. The driving gear 104 drives the driven gear 105 to rotate along the inner circumference of the gear ring 106 , thereby driving the rotating shaft 103 to rotate.

[0035] The airless high-pressure sprayer further comprises a nozzle assembly and a liquid container, wherein the nozzle assembly is provided with a spraying channel, wherein the feed channel 303 is connected to the inner cavity of the liquid container, and the discharge channel 304 is connected to the spraying channel.

[0036] The present application discloses an airless high-pressure sprayer. When the driver 102 drives the transmission assembly to work, the transmission assembly can drive the rotating shaft 103 to rotate, the rotating shaft 103 drives the swash plate body 202 to rotate, and the swash plate body 202 drives the thrust bearing to rotate. Under the driving action of the inclined thrust bearing, an eccentric force is generated to make the piston rod 4 reciprocate back and forth in the piston cavity 305, so that the liquid in the liquid container is drawn into the piston cavity 305 through the feed channel 303, and then the liquid in the piston cavity 305 is pushed into the discharge channel 304, and then sprayed out from the nozzle assembly through the spray channel.

[0037] The present utility model is not limited to the above-mentioned optimal implementation mode. Anyone can derive other various forms of products under the inspiration of the present utility model. However, no matter what changes are made in the shape or structure, all those having the same or similar technical solutions as the present application fall within the protection scope of the present utility model.

Claims

1. An airless high-pressure sprayer, characterized in that: It comprises a plunger pump, which comprises a driving assembly, a swash plate assembly and a pump body; a feed channel and a discharge channel are arranged in the pump body, and a piston assembly is arranged between the feed channel and the discharge channel; the swash plate assembly is connected between the pump body and the driving assembly, and the swash plate of the swash plate assembly is rotatably installed in the swash plate assembly; the driving assembly is used to drive the swash plate to rotate; the swash plate is connected to the piston assembly; when the swash plate rotates, the swash plate can drive the piston assembly to move back and forth in the pump body, thereby drawing the liquid in the feed channel into the discharge channel.

2. The airless high-pressure sprayer according to claim 1, characterized in that: The swash plate assembly also includes a swash plate housing, and the swash plate includes a swash plate body and a thrust bearing; the swash plate housing is fixedly connected between the drive assembly and the pump body, and the swash plate body is rotatably connected in the swash plate housing, and the swash plate body is connected to the drive assembly; a slope is provided on a side of the swash plate body close to the piston assembly, and the thrust bearing is mounted on the slope, and the thrust bearing is in an inclined state, and one side of the thrust bearing abuts against the piston assembly; when the drive assembly drives the swash plate body to rotate, the swash plate body can drive the thrust bearing to rotate, thereby pushing the piston assembly to move back and forth.

3. The airless high-pressure sprayer according to claim 2, characterized in that: The swash plate body is connected to the driving assembly; the swash plate body is provided with a connecting shaft, and the thrust bearing is sleeved outside the connecting shaft.

4. The airless high-pressure sprayer according to claim 3, characterized in that: The edge of the inclined disk body is provided with a flange, and the flange surrounds the outer side of the inclined surface.

5. The airless high-pressure sprayer according to claim 3, characterized in that: The driving assembly includes a driving housing, a driver and a transmission assembly; the swash plate housing is fixedly connected between the driving housing and the pump body; the transmission assembly is installed in the driving housing, the driver is installed on the side of the driving housing away from the swash plate housing, and the power output end of the driver is connected to the transmission assembly; the output end of the transmission assembly is connected to the swash plate body through a rotating shaft.

6. The airless high-pressure sprayer according to claim 5, characterized in that: The transmission assembly includes a driving gear, a driven gear and a gear ring; the gear ring is installed in the drive housing; the driving gear is connected to the output shaft of the driver and is located in the middle of the gear ring; at least two driven gears are provided, and the driven gear is installed between the driving gear and the gear ring, one side of the driven gear is meshed with the gear ring, and the other side of the driven gear is meshed with the driving gear; a gear shaft is provided in the middle of the driven gear, and the gear shaft is connected to the rotating shaft; the driving gear drives the driven gear to rotate along the inner circumference of the gear ring, thereby driving the rotating shaft to rotate.

7. The airless high-pressure sprayer according to claim 6, characterized in that: The side of the rotating shaft close to the gear ring is exposed outside the swash plate housing and a connecting portion is provided at the end of the rotating shaft. The end surface of the connecting portion close to the gear ring is provided with the gear shaft, and the driven gear is rotatably connected to the gear shaft.

8. The airless high-pressure sprayer according to claim 2, characterized in that: A piston cavity is provided in the pump body, and the piston cavity is communicated with the feed channel and the discharge channel; the piston assembly includes a piston rod and a return elastic member, one end of the piston rod extends into the piston cavity, the other end of the piston rod is exposed outside the pump body and the end face of the piston rod abuts against the thrust bearing; the return elastic member is supported between the other end of the piston rod and the pump body, and the return elastic member gives the other end of the piston rod a thrust to move away from the pump body; when the inclined plate body rotates, the thrust bearing will push the piston rod to slide back and forth, thereby drawing the liquid in the feed channel into the piston cavity, and then pushing the liquid from the piston cavity into the discharge channel.

9. The airless high-pressure sprayer according to claim 7, characterized in that: The feed channel is provided with a feed check valve, and the liquid can flow from the feed channel into the piston cavity in one direction; the discharge channel is provided with a discharge check valve, and the liquid can flow from the piston cavity into the discharge channel in one direction.

10. The airless high-pressure sprayer according to claim 8, characterized in that: The end of the piston rod close to the inclined surface is provided with an arc surface, and the arc surface abuts against the inclined surface.

11. The airless high-pressure sprayer according to claim 8, characterized in that: The return elastic member is a return spring, which is sleeved on the outside of the piston rod. One end of the return spring abuts against the end face of the pump body. A limiting convex ring is provided on the outer wall of the other end of the piston rod, and the other end of the return spring abuts against the limiting convex ring.

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