Spray gun opening structure and grinding equipment

Abstract

The utility model discloses a spray gun muzzle structure and grinding equipment, the spray gun muzzle structure comprises a nozzle body installed in a grinding cavity, the interior of the nozzle body is provided with a partition plate used for separating the input end and the output end of the nozzle body, and the middle surface of the partition plate is provided with a communication hole; the surface, close to the top of the input end, of the nozzle body is fixedly connected with an installation cylinder, an inner cavity of the installation cylinder is communicated with the input end of the nozzle body, and the inner cavity of the installation cylinder is provided with a pressure stabilizing assembly used for stabilizing the air pressure sprayed out of the nozzle body. Along with fluctuation of the air pressure, the position of the blocking plate can be automatically adjusted, the effective ventilation area of the communication hole is made to change continuously, dynamic balance is achieved, the output air pressure can be kept relatively stable within a certain range, and therefore the air flow flowing to the output end of the nozzle is stabilized.

Description

TECHNICAL FIELD

[0001] The utility model relates to a grinding cavity spray gun mouth structure technical field, concretely is a spray gun mouth structure and grinding equipment. BACKGROUND

[0002] The spray gun is arranged in the airflow mill grinding cavity, air is shot out through the spray gun mouth to accelerate, impact and crush the material from the feeder. In the airflow crushing process, the kinetic energy of the particles is obtained by the acceleration of the high-speed airflow.

[0003] The size of the airflow sprayed by the existing spray gun mouth structure is unstable, resulting in uneven particle size. UTILITY MODEL CONTENT

[0004] The utility model discloses a spray gun mouth structure and grinding equipment to solve the problem that the size of the airflow sprayed is not too stable in the actual use in the background art.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A spray gun mouth structure, including the nozzle body that installs in the grinding cavity, the inside of nozzle body is provided with the partition plate for separating nozzle body input end with the output end, the middle part surface of partition plate is equipped with the through -hole, the surface of nozzle body is close to the top of input end fixedly connected with the installation cylinder, the inner chamber of installation cylinder is linked with the input end of nozzle body, the inner chamber of installation cylinder is provided with the pressure stabilizing subassembly for stabilizing the air pressure that nozzle body sprays;

[0007] The pressure stabilizing subassembly includes a baffle slidably connected to the surface of the partition plate and located below the through-hole, a piston plate slidably connected to the inner chamber of the mounting cylinder, two connecting rods fixedly connected to the bottom of the piston plate on both sides, one end of each of the two connecting rods extending downward and fixedly connected to the top surface of the corresponding side of the baffle, an elastic pushing assembly provided inside the mounting cylinder for pushing the piston plate downward to control the effective ventilation area of the through-hole, and a pressure relief assembly provided on the surface of the piston plate for relieving pressure to the outside.

[0008] Preferably, the elastic pushing assembly includes a pressure plate slidably connected to the inner chamber of the mounting cylinder, a first spring provided in the inner chamber of the mounting cylinder between the pressure plate and the piston plate, the upper and lower ends of the first spring fixedly connected to the corresponding side surfaces of the pressure plate and the piston plate, a threaded rod threadedly connected to the top of the mounting cylinder, one end of the threaded rod threadedly penetrating the top of the mounting cylinder and fixedly connected to the surface of the pressure plate, and the other end of the threaded rod fixedly connected to a hand wheel.

[0009] Preferably, the pressure relief assembly comprises a vent hole opened on the mounting cylinder and the top surface of the pressure plate, the middle surface of the piston plate is provided with a pressure relief hole, the inner cavity of the pressure relief hole is slidably connected with a pull rod, one end of the bottom of the pull rod penetrates through the pressure relief hole and is fixedly connected with a sealing disc for sealing the lower opening of the pressure relief hole, the other end of the pull rod is connected with an abutting disc, the surface of the pull rod between the abutting disc and the piston plate is sleeved with a second spring, and the two ends of the second spring are fixedly connected to the bottom of the abutting disc and the top surface of the piston plate respectively.

[0010] Preferably, the two side inner walls of the pressure relief hole are fixedly connected with guide fins, and the two side surfaces of the pull rod are provided with guide grooves corresponding to the guide fins, and the two groups of guide fins are slidably connected to the inner cavities of the corresponding side guide grooves.

[0011] Preferably, the input port part of the nozzle body is communicated with a threaded ring for connecting a gas source device, the surface of the nozzle body close to the lower side of the output end is fixedly connected with a nut, and the inner cavity of the nut is in communication with the inner cavity of the nozzle body.

[0012] Preferably, the inside of the mounting cylinder and close to the position of the opening are fixedly connected with a fixed ring, and one end of the bottom of the piston plate is arranged in correspondence with the inner cavity of the fixed ring.

[0013] The utility model discloses still a kind of grinding equipment, including the spray gun mouth structure of above.

[0014] Compared with prior art, the utility model has the beneficial effects that:

[0015] 1, the utility model discloses a pressure stabilizing assembly is arranged, when the gas pressure of nozzle body input end suddenly increases, with the fluctuation of gas pressure, the plugging plate will automatically adjust position, the effective ventilation area of communication hole is constantly changed, to reach a kind of dynamic balance, so that output gas pressure can be kept relatively stable within a certain range, to stabilize the gas flow to nozzle output end.

[0016] 2, the utility model discloses the setting of elastic pushing assembly, rotates hand wheel and drives screw rod to rotate, screw rod drives pressure plate to move up and down in the inner cavity of mounting cylinder, to change the compression degree of first spring, to improve the pressure of piston plate, set the response characteristic of piston plate under different gas pressure conditions, to accurately control the shielding degree of plugging plate to communication hole, realize the fine adjustment of gas flow and gas pressure.

[0017] 3, the utility model discloses the setting of pressure relief assembly, piston plate moves up and down along pull rod, to open pressure relief hole, high-pressure gas can be discharged rapidly, to further reduce internal gas pressure, guarantee the safety of device and the stability of output gas pressure, effectively prevent mounting cylinder and even the whole nozzle device from being damaged, broken and other dangerous conditions due to excessively high gas pressure. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the structure schematic view of the grinding cavity spray gun mouth structure of the utility model;

[0019] Figure 2 It is the section structure schematic view of the nozzle body of the utility model;

[0020] Figure 3 It is the internal structure schematic view of the nozzle body of the utility model;

[0021] Figure 4 It is the structure schematic view of the first spring of the utility model;

[0022] Figure 5 It is the section structure schematic view of the piston plate of the utility model.

[0023] In the drawings:

[0024] 100, nozzle body; 101, nut; 102, threaded ring; 103, communication hole; 104, partition plate;

[0025] 200, mounting cylinder; 201, air hole; 202, fixed ring; 203, plugging plate; 204, connecting rod; 205, piston plate; 206, first spring;

[0026] 300, hand wheel; 301, screw rod; 302, limiting ring; 303, pressure plate;

[0027] 400, abutment disc; 401, second spring; 402, pressure relief hole; 403, guide piece; 404, guide groove; 405, pull rod; 406, sealing disc. DETAILED DESCRIPTION

[0028] The technical scheme in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0029] Please refer to Figures 1-5The embodiment provides a grinding cavity spray gun nozzle structure, which comprises a nozzle body 100 installed in a grinding cavity, an inside of the nozzle body 100 is provided with a partition plate 104 for separating an input end and an output end of the nozzle body 100, a middle surface of the partition plate 104 is provided with a communication hole 103, a surface of the nozzle body 100 close to the top of the input end is fixedly connected with a mounting cylinder 200, an inner cavity of the mounting cylinder 200 is communicated with the input end of the nozzle body 100, and the inner cavity of the mounting cylinder 200 is provided with a pressure stabilizing assembly for stabilizing gas pressure sprayed by the nozzle body 100.

[0030] The pressure stabilizing assembly comprises a sealing plate 203 which is slidably connected to the surface of the partition plate 104 and located at the lower part of the communication hole 103, the inner cavity of the mounting cylinder 200 is slidably connected with a piston plate 205, the bottom of the piston plate 205 is fixedly connected with a connecting rod 204 on both sides, one end of the two connecting rods 204 extends downward and is fixedly connected to the top surface of the corresponding side of the sealing plate 203, the inner part of the mounting cylinder 200 is provided with an elastic pushing assembly for pushing the piston plate 205 downward and controlling the effective ventilation area of the communication hole 103, the surface of the piston plate 205 is provided with a pressure relief assembly for relieving pressure to the outside, through the setting of the pressure stabilizing assembly, when the gas pressure of the input end of the nozzle body 100 suddenly increases, the sealing plate 203 will automatically adjust the position with the fluctuation of the gas pressure, so that the effective ventilation area of the communication hole 103 changes constantly, so as to achieve a dynamic balance, so that the output gas pressure can be relatively stable within a certain range, thereby stabilizing the gas flow to the output end of the nozzle.

[0031] Further, the elastic pushing assembly comprises a pressure plate 303 which is slidably connected to the inner cavity of the mounting cylinder 200, the inner cavity of the mounting cylinder 200 between the pressure plate 303 and the piston plate 205 is provided with a first spring 206, the upper and lower ends of the first spring 206 are fixedly connected to the corresponding side surfaces of the pressure plate 303 and the piston plate 205 respectively, the top of the mounting cylinder 200 is threadedly connected with a screw rod 301, one end of the screw rod 301 is threadedly penetrated through the top of the mounting cylinder 200 and fixedly connected to the surface of the pressure plate 303, the other end of the screw rod 301 is fixedly connected with a hand wheel 300, and a limit ring 302 is fixedly sleeved on the neck surface of the screw rod 301, through the setting of the elastic pushing assembly, rotating the hand wheel 300 drives the screw rod 301 to rotate, the screw rod 301 drives the pressure plate 303 to move up and down in the inner cavity of the mounting cylinder 200, thereby changing the compression degree of the first spring 206, so as to improve the pressure on the piston plate 205, set the response characteristics of the piston plate 205 under different gas pressure conditions, thereby accurately controlling the shielding degree of the sealing plate 203 to the communication hole 103, and realizing fine adjustment of the gas flow and gas pressure.

[0032] Further, the pressure relief assembly comprises the air vent hole 201 formed in the top surface of the mounting cylinder 200 and the pressure plate 303, the middle surface of the piston plate 205 is provided with the pressure relief hole 402, the inner cavity of the pressure relief hole 402 is slidably connected with the pull rod 405, one end of the bottom of the pull rod 405 penetrates through the pressure relief hole 402 and is fixedly connected with the sealing disc 406 for sealing the lower opening of the pressure relief hole 402, the other end of the pull rod 405 is connected with the abutting disc 400, the surface of the pull rod 405 between the abutting disc 400 and the piston plate 205 is sleeved with the second spring 401, the two ends of the second spring 401 are fixedly connected to the bottom of the abutting disc 400 and the top surface of the piston plate 205, through the arrangement of the pressure relief assembly, the piston plate 205 moves up and down along the pull rod 405, so that the pressure relief hole 402 is opened, the high-pressure gas is rapidly discharged, the internal air pressure is further reduced, the safety of the device and the stability of the output air pressure are ensured, and the damage, rupture and other dangerous conditions of the mounting cylinder 200 and even the entire nozzle device caused by the excessively high air pressure are effectively prevented.

[0033] Preferably, the two side inner walls of the pressure relief hole 402 are fixedly connected with the guide pieces 403, the two side surfaces of the pull rod 405 are provided with the guide grooves 404 corresponding to the guide pieces 403, and the two groups of guide pieces 403 are slidably connected to the inner cavities of the corresponding side guide grooves 404. Through the arrangement of the guide pieces 403, the guide pieces 403 and the guide grooves 404 on the two sides of the pull rod 405 are matched with each other, so that the stability and accuracy of the pull rod 405 during the up-and-down sliding process are ensured, and in the pressure relief process, the pull rod 405 can stably move along the predetermined track, and the sealing disc 406 cannot accurately open or close the pressure relief hole 402 due to the shaking and deviation of the pull rod 405.

[0034] It is worth noting that the input port part of the nozzle body 100 is connected with the threaded ring 102 for connecting the gas source equipment, the surface of the nozzle body 100 close to the lower side of the output end is fixedly connected with the nut 101, the inner cavity of the nut 101 is connected with the inner cavity of the nozzle body 100, through the arrangement of the threaded ring 102 and the nut 101, the threaded ring 102 can be used to conveniently connect various different specifications and types of gas source equipment with the nozzle body 100, and the nut 101 can be used to connect the paint tank with the nozzle body 100.

[0035] Preferably, the inner part of the mounting cylinder 200 and the position close to the opening are fixedly connected with the fixing ring 202, one end of the bottom of the piston plate 205 is arranged in the inner cavity of the fixing ring 202 in a corresponding mode, and the fixing ring 202 can be used to stabilize and limit the bottom of the piston plate 205, so that the piston plate 205 cannot excessively move or deviate from the normal working position.

[0036] The utility model discloses still disclose a kind of grinding equipment, including the nozzle mouth structure of above.

[0037] Working principle

[0038] When the gas pressure at the input end of the nozzle body 100 suddenly increases, the upward pressure of the gas entering the installation cylinder 200 on the piston plate 205 also increases, and when this upward pressure exceeds the downward pushing force of the first spring 206, the piston plate 205 begins to slide upward, drives the sealing plate 203 to move upward through the connecting rod 204, increases the shielding area of the sealing plate 203 to the communication hole 103, and reduces the effective ventilation area of the communication hole 103, so as to stabilize the gas flow to the output end of the nozzle;

[0039] If the gas pressure in the inner cavity of the installation cylinder 200 rises to a certain value, the abutting disc 400 abuts against the bottom surface of the pressure plate 303, and when the gas pressure continues to rise, the piston plate 205 moves up and down along the pull rod 405, and the sealing disc 406 moves away from the bottom of the pressure relief hole 402, so as to open the pressure relief hole 402, and the high-pressure gas in the inner cavity of the installation cylinder 200 can be discharged to the outside through the gas permeable hole 201 and the pressure relief hole 402, further reducing the internal gas pressure, and ensuring the safety of the device and the stability of the output gas pressure, and when the gas pressure decreases to a standard value, the piston plate 205 is reset under the pushing of the first spring 206, so that the abutting disc 400 moves away from the pressure plate 303, and the abutting disc 400 moves upward under the pushing of the second spring 401, and the sealing disc 406 seals the pressure relief hole 402 under the driving of the pull rod 405;

[0040] Rotating the hand wheel 300 drives the screw rod 301 to rotate, and the screw rod 301 drives the pressure plate 303 to move up and down in the inner cavity of the installation cylinder 200, thereby changing the compression degree of the first spring 206, increasing the pressure on the piston plate 205, setting the response characteristics of the piston plate 205 under different gas pressure conditions, and accurately controlling the shielding degree of the sealing plate 203 to the communication hole 103, thereby realizing fine adjustment of the gas flow and gas pressure.

[0041] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A lance nozzle structure, characterized by The utility model provides a kind of nozzle body (100) including being installed in grinding cavity, the inside of the nozzle body (100) is provided with the partition plate (104) for separating nozzle body (100) input end with output end, the middle surface of the partition plate (104) is provided with communicating hole (103), the surface of the nozzle body (100) near input end top is fixedly connected with installation cylinder (200), the inner cavity of the installation cylinder (200) is communicated with the input end of nozzle body (100), the inner cavity of the installation cylinder (200) is provided with pressure stabilizing component for stabilizing the air pressure that nozzle body (100) sprays; The pressure stabilizing component includes a blocking plate (203) slidingly connected to the surface of the partition plate (104) and located below the communicating hole (103). The inner cavity of the installation cylinder (200) slidingly connects a piston plate (205). The bottom of the piston plate (205) is fixedly connected to a connecting rod (204) on both sides. One end of each of the two connecting rods (204) extends downward and is fixedly connected to the top surface of the corresponding side of the blocking plate (203). The inside of the installation cylinder (200) is provided with an elastic pushing component for pushing the piston plate (205) downward to control the effective ventilation area of the communicating hole (103). The surface of the piston plate (205) is provided with a pressure relief component for pressure relief to the outside.

2. The lance lip structure of claim 1, wherein: The elastic pushing component includes a pressure plate (303) slidingly connected to the inner cavity of the installation cylinder (200). The inner cavity of the installation cylinder (200) between the pressure plate (303) and the piston plate (205) is provided with a first spring (206). The upper and lower ends of the first spring (206) are fixedly connected to the corresponding side surfaces of the pressure plate (303) and the piston plate (205), respectively. The top of the installation cylinder (200) is threadedly connected to a screw rod (301). One end of the screw rod (301) is threadedly penetrated through the top of the installation cylinder (200) and fixedly connected to the surface of the pressure plate (303). The other end of the screw rod (301) is fixedly connected to a hand wheel (300).

3. The lance lip structure of claim 2, wherein: The pressure relief component includes an air hole (201) opened on the top surface of the installation cylinder (200) and the pressure plate (303). The middle surface of the piston plate (205) is provided with a pressure relief hole (402). The inner cavity of the pressure relief hole (402) slidingly inserts a pull rod (405). One end of the bottom of the pull rod (405) penetrates through the pressure relief hole (402) and is fixedly connected to a sealing disc (406) for sealing the lower opening of the pressure relief hole (402). The other end of the pull rod (405) is connected to an abutting disc (400). The surface of the pull rod (405) between the abutting disc (400) and the piston plate (205) is sleeved with a second spring (401). The two ends of the second spring (401) are fixedly connected to the bottom of the abutting disc (400) and the top surface of the piston plate (205), respectively.

4. The lance lip structure of claim 3, wherein: Both sides of the pressure relief hole (402) are fixedly connected with guide pieces (403), the both sides of the pull rod (405) are provided with guide grooves (404) corresponding to the guide pieces (403), and the two groups of guide pieces (403) are respectively slidably connected to the inner cavities of the corresponding side guide grooves (404).

5. The lance lip structure of claim 1, wherein: The input port part of the nozzle body (100) is communicated with a threaded ring (102) for connecting a gas source device, and the nozzle body (100) is fixedly connected with a nut (101) on the surface close to the lower side of the output end, and the inner cavity of the nut (101) is communicated with the inner cavity of the nozzle body (100).

6. The lance lip structure of claim 5, wherein: The inside of the mounting cylinder (200) and close to the mouth part position are fixedly connected with a fixing ring (202), and the bottom one end of the piston plate (205) is correspondingly arranged with the inner cavity of the fixing ring (202).

7. A grinding apparatus characterized by comprising: The nozzle structure comprises the nozzle body (100) and the piston plate (205). The nozzle structure comprises the nozzle body (100) and the piston plate (205).

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