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CN-224221676-U - Spraying machine

CN224221676UCN 224221676 UCN224221676 UCN 224221676UCN-224221676-U

Abstract

The utility model provides a spraying machine which comprises a spraying machine body, a backflow valve, a driving device and a control device, wherein the spraying machine body is provided with a working state and an idle state, the backflow valve comprises a valve body and a sliding valve core, a feeding channel, a discharging channel and a backflow channel which are mutually communicated are arranged in the valve body, the backflow channel is provided with a valve port, the sliding valve core is movably arranged at the valve port, the sliding valve core is provided with an opening position for opening the valve port and a blocking position for blocking the valve port, the driving device is used for driving the sliding valve core to move between the opening position and the blocking position, and the control device is electrically connected with the driving device and the spraying machine body and controls the driving device to work under the condition that the spraying machine body is switched from the working state to the idle state so that the sliding valve core moves from the blocking position to the opening position. By applying the technical scheme of the utility model, the problem that the manual reflux valve in the prior art needs manual operation to release pressure in a non-working state, and putty is easy to dry due to omission can be effectively solved.

Inventors

  • ZHANG RENCAI
  • MA JUN
  • SHEN BINLIANG
  • YANG FANGBING
  • WU MIAOMIAO

Assignees

  • 苏州方石科技有限公司

Dates

Publication Date
20260512
Application Date
20250522

Claims (10)

  1. 1. A spray coater, comprising: The spraying machine comprises a spraying machine body, a control device and a control device, wherein the spraying machine body is provided with a working state and an idle state and is provided with a pumping channel; The backflow valve (10) comprises a valve body (11) and a sliding valve core (12), wherein a feeding channel (111), a discharging channel (112) and a backflow channel (113) which are communicated with each other are arranged in the valve body (11), the feeding channel (111) is communicated with the pumping channel, a valve port (114) is arranged in the middle of the backflow channel (113), the sliding valve core (12) is movably arranged at the valve port (114), and the sliding valve core (12) is provided with an opening position for opening the valve port (114) and a blocking position for blocking the valve port (114); A drive device (20) for driving the sliding valve core (12) to move between the opening position and the blocking position; The control device is electrically connected with the driving device (20) and the spraying machine body, and when the spraying machine body is switched from the working state to the idle state, the control device controls the driving device (20) to work so that the sliding valve core (12) moves from the blocking position to the opening position.
  2. 2. The applicator of claim 1, the spraying machine is characterized by further comprising: The switch mechanism (30), the drive arrangement (20) drive switch mechanism (30) motion, switch mechanism (30) include with slide case (12) complex cooperation structure and first limit structure and second limit structure, when switch mechanism (30) motion to first limit structure with slide case (12) complex, slide case (12) keep in the shutoff position under first limit structure's spacing, when switch mechanism (30) motion to cooperation structure with slide case (12) complex, slide case (12) vertical movement under the butt of cooperation structure, when switch mechanism (30) motion to second limit structure with slide case (12) complex, slide case (12) keep in the open position under second limit structure's spacing.
  3. 3. The spraying machine according to claim 2, wherein the switching mechanism (30) comprises a rotating seat driven to rotate by the driving device (20), a matching groove (311) is formed in the rotating seat, the matching groove (311) comprises a first limiting groove section (312), a second limiting groove section (313) and a transition groove section (314) between the first limiting groove section (312) and the second limiting groove section (313), the radius of the first limiting groove section (312) is smaller than that of the second limiting groove section (313), the radius of the transition groove section (314) gradually increases from the first limiting groove section (312) to the second limiting groove section (313), the sliding valve core (12) comprises a valve core body (121) and a matching shaft (122) arranged at the bottom of the valve core body (121), the matching shaft (122) is arranged in the matching groove (311) in a penetrating mode, and the first limiting groove section (312), the second limiting groove section (313) and the transition groove section (314) form a limiting structure with the first limiting structure.
  4. 4. A spray applicator according to claim 3, wherein the transition trough section (314) is an arcuate trough.
  5. 5. A spraying machine according to claim 3, characterized in that the rotating seat comprises two rotating discs (31) which are arranged oppositely and a connecting piece (32) for connecting the two rotating discs (31), the two rotating discs (31) are provided with the matching grooves (311), the matching grooves (311) on the two rotating discs (31) are opposite, a avoidance gap for avoiding the bottom of the valve core body (121) is formed between the two rotating discs (31), and the matching shaft (122) passes through the two matching grooves (311) on the two rotating discs (31) which are opposite.
  6. 6. The applicator of claim 5, wherein the mating shaft (122) comprises a pin shaft traversing the bottom of the spool body (121), one end of the pin shaft being provided with a stub shaft (123), the other end of the pin shaft being inserted with a cotter pin (124), the stub shaft (123) and cotter pin (124) being located outside of the two turntables (31), respectively.
  7. 7. A spray applicator according to claim 3, wherein the swivel mount is made of polytetrafluoroethylene, or nylon or polyoxymethylene.
  8. 8. The spraying machine according to claim 2, characterized in that the switching mechanism (30) comprises a movable wedge driven to move by the driving device (20), the upper surface of the wedge comprises a first limit level (33), a second limit level (34) higher than the first limit level (33) and an inclined plane (35) between the first limit level (33) and the second limit level (34), the sliding valve core (12) comprises a valve core body (121) and balls (125) arranged at the bottom of the valve core body (121), and the first limit level (33), the second limit level (34) and the inclined plane (35) form the first limit structure, the second limit structure and the matching structure respectively.
  9. 9. The applicator of claim 1, further comprising a mounting base (40) disposed on the valve body (11) of the return valve (10), the drive device (20) being mounted on the mounting base (40).
  10. 10. The spraying machine according to claim 1, characterized in that it further comprises a pressure measuring device (50) arranged on the valve body (11) of the return valve (10), the pressure measuring end of the pressure measuring device (50) measuring the pressure in the feed channel (111) and the discharge channel (112).

Description

Spraying machine Technical Field The utility model relates to the field of spraying equipment, in particular to a spraying machine. Background In the field of putty spraying technology, airless putty sprayers are widely used in indoor and outdoor decoration construction for uniformly spraying putty powder on a working surface. The spraying machine mainly sucks putty liquid into the pump cavity from the storage vat through the pumping device, then conveys the putty liquid to the spray gun through the high-pressure pipeline, and finally sprays the putty at the nozzle in a high-pressure state, so that continuous and uniform spraying of the putty is realized. At present, a high-pressure filter is arranged on a conventional airless putty spraying machine, and a manual backflow valve and a backflow pipe are connected to the rear of the filter, so that the purpose of exhausting or decompressing is achieved when the spraying machine is ready for operation or maintenance is achieved, the putty is prevented from losing fluidity under high pressure and drying inside a pump body, and the problems of unstable pressure and blockage are avoided. However, this manually operated return valve mechanism suffers from several problems: First, the manual return valve requires a user to manually operate to release pressure after each stop of the spraying operation, however, the pressure release step is easily omitted due to the complexity of the operation and the user's carelessness. Once the operation is leaked, putty is easy to dry under high pressure, so that a pump body, a pipeline or a nozzle of the spraying machine is blocked, the subsequent spraying effect and efficiency are affected, and even additional maintenance and cleaning work are needed, so that the cost and the labor intensity are increased. Furthermore, frequent operation of the manual return valve increases the burden on the user, especially in the case of continuous multi-batch operation or high frequency use, frequent manual control is time-consuming and laborious. Disclosure of utility model The utility model mainly aims to provide a spraying machine, which solves the problems that in the prior art, a manual reflux valve needs to be manually operated to release pressure in a non-working state, and putty is easy to dry and knot due to omission. The utility model provides a spraying machine which comprises a spraying machine body, a backflow valve, a control device and a control device, wherein the spraying machine body is provided with a working state and an idle state, the spraying machine body is provided with a pumping channel, the backflow valve comprises a valve body and a sliding valve core, a feeding channel, a discharging channel and a backflow channel which are mutually communicated are arranged in the valve body, the feeding channel is communicated with the pumping channel, a valve port is arranged in the middle of the backflow channel, the sliding valve core is movably arranged at the valve port, the sliding valve core is provided with an opening position for opening the valve port and a blocking position for blocking the valve port, the driving device is used for driving the sliding valve core to move between the opening position and the blocking position, and the control device is electrically connected with the driving device and the spraying machine body, and is used for controlling the driving device to work when the spraying machine body is switched from the working state to the idle state so that the sliding valve core moves from the blocking position to the opening position. In one embodiment, the spraying machine further comprises a switch mechanism, the driving device drives the switch mechanism to move, the switch mechanism comprises a matching structure matched with the sliding valve core, a first limiting structure and a second limiting structure, when the switch mechanism moves to the first limiting structure to be matched with the sliding valve core, the sliding valve core is kept at a blocking position under the limit of the first limiting structure, when the switch mechanism moves to the matching structure to be matched with the sliding valve core, the sliding valve core vertically moves under the propping of the matching structure, and when the switch mechanism moves to the second limiting structure to be matched with the sliding valve core, the sliding valve core is kept at an opening position under the limit of the second limiting structure. In one embodiment, the switch mechanism comprises a rotating seat driven by the driving device to rotate, a matching groove is formed in the rotating seat, the matching groove comprises a first limiting groove section, a second limiting groove section and a transition groove section between the first limiting groove section and the second limiting groove section, the radius of the first limiting groove section is smaller than that of the second limiting groove section, the radius of the trans