Baking soda spraying device

Abstract

The present invention provides a baking soda spraying device, comprising a feed pipe, a reamer mechanism, an air supply mechanism and an outlet pipe; the feed pipe comprises a feed pipe and a discharge pipe which are interconnected, the reamer mechanism is installed at the discharge end of the discharge pipe, the reamer mechanism is used to prevent baking soda from being blocked in the discharge pipe, the reamer mechanism comprises a guide shell, a rotating shaft rotatably installed in the guide shell and a reamer fixed on the rotating shaft; the air supply mechanism is used to drive the reamer mechanism to rotate, the air supply mechanism comprises a fan and an air supply pipe connected to the fan, the end of the air supply pipe extends into the discharge pipe and is arranged opposite to the reamer mechanism; the outlet pipe is fixedly connected to the reamer mechanism, and the reamer mechanism can form a swirl of baking soda and then send it into the outlet pipe. The present invention can solve the problem of baking soda agglomerating at the pipe mouth and blocking the pipe mouth when spraying.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical equipment, and in particular relates to a baking soda spraying device. Background Art

[0002] In the sandblasting equipment, baking soda can be sprayed with a sandblasting machine to clean and remove rust, coatings and dirt on the surface of objects without damaging the substrate. However, in the spraying system, when the baking soda is sprayed out, it collides with the inner wall and rubs to generate heat, gradually turning into a high-temperature environment. Under high temperature, the baking soda reacts with oxygen in the air to become sodium carbonate and water, which then slowly accumulates at the diameter-changing port and hardens, blocking the spray port.

[0003] Therefore need a kind of baking soda spraying device that can not block the spraying port. Summary of the invention

[0004] The invention aims to provide a baking soda spraying device to solve the problem that baking soda agglomerates at a pipe opening and blocks the pipe opening when spraying.

[0005] The present invention provides the following technical solutions:

[0006] A baking soda spraying device comprises a feeding pipe, a reamer mechanism, an air supply mechanism and an outlet pipe;

[0007] The discharge pipe includes a feed pipe and a discharge pipe which are interconnected, the reamer mechanism is installed at the discharge end of the discharge pipe, the reamer mechanism can prevent soda ash from being blocked in the discharge pipe, and the reamer mechanism includes a guide shell, a rotating shaft rotatably installed in the guide shell, and a reamer fixed on the rotating shaft;

[0008] The air supply mechanism is used to drive the reamer mechanism to rotate, and the air supply mechanism includes a fan and an air supply pipe connected to the fan, and the end of the air supply pipe extends into the discharge pipe and is arranged opposite to the reamer mechanism;

[0009] The outlet pipe is fixedly connected to the reamer mechanism, and the reamer mechanism can form a swirl of baking soda and then send it into the outlet pipe.

[0010] Preferably, the guide shell is a conical tube shell that tapers toward the outlet pipe side, and bearing brackets are fixedly mounted at both ends of the guide shell, bearings are mounted on the bearing brackets, and both ends of the rotating shaft are respectively mounted in the bearings.

[0011] Preferably, the bearing bracket located on the inner side of the guide shell is arched toward the discharge pipe to form a conical connection structure with the guide shell.

[0012] Preferably, the width of the reamer gradually decreases from a side close to the discharge pipe to a side away from the discharge pipe, and a plurality of the reamers are distributed in a spiral shape on the rotating shaft in a swirling flow.

[0013] Preferably, the connecting end of the feed pipe and the discharge pipe is inclined toward the discharge end of the discharge pipe, so that the feed pipe and the discharge pipe are distributed at an acute angle.

[0014] Preferably, the extended portion of the air supply pipe in the discharge pipe does not intersect with the virtual extension line of the feed pipe in the discharge pipe.

[0015] Furthermore, the air supply mechanism also includes an extension tube, which is sleeved on the air supply tube. The extension tube can be driven by a driving cylinder to translate toward one side of the reamer mechanism.

[0016] Preferably, a sealing baffle for isolating baking soda powder is radially fixed inside the discharge pipe, a through hole matching the outer diameter of the extension tube is opened on the sealing baffle, the extension tube passes through the through hole, and the driving cylinder is located in a sealed cavity enclosed by the sealing baffle and the discharge pipe.

[0017] Furthermore, a three-way valve is installed on the outlet pipe, one port of the three-way valve is connected to a reverse flow air duct, and the reverse flow air duct can blow the reamer mechanism in reverse direction together with the air supply mechanism.

[0018] Furthermore, a cooling water pipe is spirally wound on the outer wall of the guide shell, and the cooling water pipe is connected to a cold water tank.

[0019] The beneficial effect of the present invention is as follows: the present invention adds an air supply mechanism and a reamer mechanism at both ends of the discharge pipe respectively, and the wind pressure of the air supply mechanism is used as a power source to supply air to the reamer mechanism at high speed to drive the reamer to rotate, thereby forming a high-speed vortex, so that the baking soda powder sent from the discharge pipe can quickly pass through the discharge pipe along the high-speed vortex, thereby reducing the baking soda solidification on the inner wall of the discharge pipe and solving the blockage phenomenon of the inner wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0021] Figure 1 It is a schematic diagram of the internal structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the main structure of the reamer mechanism of the present invention;

[0023] Figure 3 It is a three-dimensional structural schematic diagram of the reamer mechanism of the present invention.

[0024] The markings in the figure are:

[0025] 100. Feeding pipe; 110. Feeding pipe; 120. Discharging pipe; 121. Air supply end; 122. Feeding hole; 123. Discharging end; 124. Sealing baffle; 125. Sealing chamber;

[0026] 200. reamer mechanism; 210. guide shell; 220. rotating shaft; 230. reamer; 240. bearing bracket;

[0027] 300. air supply mechanism; 310. air supply pipe; 320. extension pipe; 330. driving cylinder; 340. transmission plate;

[0028] 400.Export pipe;

[0029] 500. Injector housing;

[0030] 600. Three-way valve;

[0031] 700. Counterflow duct;

[0032] 800. Cooling water pipe. DETAILED DESCRIPTION

[0033] like Figure 1 As shown, a baking soda injection device includes a feed pipe 100, a reamer mechanism 200, an air supply mechanism 300 and an outlet pipe 400. The feed pipe 100, the reamer mechanism 200, the air supply mechanism 300 and the outlet pipe 400 are all fixedly installed in an injector housing 500.

[0034] The feed pipe 100 includes a feed pipe 110 and a discharge pipe 120. The discharge pipe 120 includes an air supply end 121, a feed hole 122 and a discharge end 123 which are sequentially arranged from left to right. The feed pipe 110 is welded to the feed hole 122 and communicates with the discharge pipe 120. The connection end of the feed pipe 110 and the feed hole 122 is inclined toward the discharge end 123 of the discharge pipe, so that the feed pipe 110 and the discharge pipe 120 are distributed at an acute angle, which facilitates the smooth flow of baking soda powder to the discharge end 123.

[0035] like Figures 1 to 3 As shown, the reamer mechanism 200 can prevent the soda powder from being blocked in the discharge pipe. The reamer mechanism 200 is installed at the discharge end 123 of the discharge pipe. The reamer mechanism 200 includes a guide shell 210, a rotating shaft 220 rotatably installed in the guide shell 210, and a reamer 230 fixed on the rotating shaft 220. The guide shell 210 is welded to the discharge end of the discharge pipe 120, and the rotating shaft 220 is installed along the axial direction of the guide shell 210. The guide shell 210 is a conical tube shell that gradually expands toward one side of the discharge pipe. Bearing brackets 240 are fixedly installed at both ends of the guide shell 210. Bearings are installed on the bearing brackets 240, and the two ends of the rotating shaft 220 are respectively installed in two bearings. The conical guide shell 210 is conducive to forming a greater centrifugal force and increasing the flow rate of the baking soda powder.

[0036] Please refer to Figure 2 and Figure 3 The bearing bracket 240 supports the bearing and the rotating shaft 220, so that the rotating shaft 220 can rotate at a high speed in the guide shell 210, thereby driving the reamer 230 to rotate and form a vortex. After the baking soda powder passes through the bearing bracket 240 and enters the guide shell 210, the baking soda powder is quickly guided out by the vortex to avoid blocking the outlet of the discharge pipe 120. In order to increase the support strength of the bearing bracket 240 for the rotating shaft 220 and the reamer 230, the bearing bracket 240 at the inlet end of the guide shell 210 is arched toward the side of the discharge pipe 120, thereby forming a conical connection structure with the guide shell 210, increasing the fixing strength between the bearing bracket 240 and the guide shell 210, and more effectively resisting the wind pressure output by the air supply mechanism 300.

[0037] Correspondingly, the width of the reamer 230 is similar to that of the conical guide shell, which gradually decreases from the side close to the discharge pipe 120 to the side away from the discharge pipe 120. The multiple reamers 230 are distributed in a spiral shape on the rotating shaft 220 in a swirl-like manner, which can form a swirl of high-speed centrifugal motion, and quickly guide the baking soda powder out to avoid clogging the pipe opening. The outlet pipe 400 is fixedly connected to the guide shell 210 of the reamer mechanism, and the reamer mechanism 200 can form a swirl of baking soda and send it into the outlet pipe 400.

[0038] like Figure 1 As shown, the air supply mechanism 300 is used to drive the reamer mechanism 200 to rotate at high speed. The air supply mechanism 300 is arranged opposite to the reamer mechanism 200. The air supply mechanism 300 includes a fan and an air supply pipe 310 connected to the fan. The end of the air supply pipe 310 extends into the air supply end 121 of the discharge pipe. The air supply pipe 310 applies wind pressure to the reamer mechanism 200 to make the reamer 230 rotate at high speed. The device uses wind energy to drive the reamer to rotate. There is no physical structure in the drive device that contacts the reamer and the baking soda powder. The baking soda will not be hardened on the drive device, so there is no need to frequently clean the internal pipes and parts of the device. The extended part of the air supply pipe 310 in the discharge pipe does not intersect with the virtual extension line of the feed pipe 110 in the discharge pipe 120. Therefore, the air supply pipe 310 can start to supply air to the powder from the starting section where the powder enters the discharge pipe 120, thereby contacting the baking soda powder over a larger area and more efficiently delivering the powder into the reamer mechanism 200.

[0039] The air supply mechanism 300 also includes an extension tube 320, which is sleeved on the air supply pipe 310. A transmission plate 340 is installed on the outer wall of the extension tube 320. The driving cylinder 330 is installed on the injector housing 500 and is located in the discharge pipe 120. The piston rod of the driving cylinder 330 is connected to the transmission plate 340 by bolts. The extension tube 320 can be driven by the driving cylinder 330 to translate toward one side of the reamer mechanism 200, thereby extending the air supply distance. When the equipment is shut down, the extension tube 320 can be aimed at the reamer mechanism 200 to spray airflow to remove dust attached to the reamer mechanism 200.

[0040] A sealing baffle 124 is fixedly installed radially in the discharge pipe 120. The sealing baffle 124, the discharge pipe 120 and the ejector housing 500 together form a sealed chamber 125. The driving cylinder 330 is located in the sealed chamber 125. The sealing baffle 124 is used to isolate the baking soda powder to prevent it from contaminating the driving cylinder 330, thereby ensuring the reliability of the operation of the driving cylinder 330. The sealing baffle 124 is provided with a through hole matching the outer diameter of the extension tube 320. The extension tube 320 passes through the through hole, and the extension tube can move left and right relative to the through hole.

[0041] A three-way valve 600 is installed on the outlet pipe 400, and one port of the three-way valve 600 is connected to the countercurrent air duct 700. The three-way valve 600 can be adjusted to close the outlet pipe so that the countercurrent air duct 700 is connected to the reamer mechanism 200. The countercurrent air duct 700 transmits countercurrent wind pressure to the reamer mechanism 200. The countercurrent wind pressure and the extension pipe 320 of the air supply mechanism 300 simultaneously blow the reamer mechanism 200 in reverse, forming turbulence in the guide shell 210, thereby more effectively blowing and separating the powder attached to the guide shell 210, the reamer 230 and the rotating shaft 220, and quickly cleaning the reamer mechanism 200. There is no need to disassemble the reamer mechanism 200 from the injector housing 500 to clean the reamer mechanism, and the cleaning process is more efficient.

[0042] A cooling water pipe 800 is spirally wound on the outer wall of the guide shell 210, and the cooling water pipe 800 is connected to a cold water tank through a water pump to provide circulating cooling water to the guide shell 210. The cooling water pipe 800 further cools the guide shell 210 to avoid that the baking soda powder and the guide shell 210 collide at high speed to form a high temperature environment, which prompts part of the baking soda powder to react with oxygen and form a hardening on the guide shell. In order to reduce the ambient temperature in the ejector housing 500, the air supply pipe 310 and the countercurrent air pipe 700 can also be connected to a cold air machine at the same time. In addition, in order to reduce the moisture in the jet air flow and prevent the baking soda from absorbing moisture and agglomerating, a dryer can be installed on the air supply pipe 310 and the countercurrent air pipe 700 respectively.

[0043] Installation method of the reamer mechanism of this device:

[0044] 1. The reamer mechanism 200 and the baking soda injection device are made in one piece. The bearing bracket 240 is fully welded at the port of the guide shell 210 by gas welding, and then the bearing is installed. The welded rotating shaft 220 and the reamer 230 are installed on the bearing, and the rotation force and smoothness of the rotating shaft 220 are checked to see if they are appropriate.

[0045] 2. Install the reamer mechanism 200 at the discharge end of the discharge pipe 120, perform full welding with gas welding, and then grind the weld until the surface is smooth.

[0046] The working process of this device is:

[0047] The air supply pipe 310 and the countercurrent air pipe 700 are connected to the fan, the cooling water pipe 800 is connected to the water pump and the cold water tank, the feed pipe 110 is connected to the baking soda injector, the baking soda powder is blown into the reamer mechanism 200 on the discharge pipe from the feed pipe 110, the air supply pipe 310 supplies air to the reamer mechanism 200, drives the reamer mechanism 200 to rotate at high speed, and quickly sends the baking soda powder into the outlet pipe 400. After the shutdown, the baking soda spraying stops, and the driving cylinder 330 is started at this time to extend the extension pipe 320 to one side of the reamer mechanism 200; the three-way valve 600 is adjusted to make the countercurrent air pipe 700 connect to the guide shell 210 of the reamer mechanism, and the extension pipe 320 and the countercurrent air pipe 700 simultaneously supply air to the reamer mechanism 200, so that turbulence is formed in the guide shell 210, thereby effectively removing the baking soda dust attached to the inner wall of the reamer mechanism 200.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A baking soda spraying device, characterized in that: It includes a feeding pipe, a reamer mechanism, an air supply mechanism and an outlet pipe; The discharge pipe includes a feed pipe and a discharge pipe which are interconnected, the reamer mechanism is installed at the discharge end of the discharge pipe, the reamer mechanism can prevent soda ash from being blocked in the discharge pipe, and the reamer mechanism includes a guide shell, a rotating shaft rotatably installed in the guide shell, and a reamer fixed on the rotating shaft; The air supply mechanism is used to drive the reamer mechanism to rotate, and the air supply mechanism includes a fan and an air supply pipe connected to the fan, and the end of the air supply pipe extends into the discharge pipe and is arranged opposite to the reamer mechanism; The outlet pipe is fixedly connected to the reamer mechanism, and the reamer mechanism can form a swirl of baking soda and then send it into the outlet pipe; The guide shell is a conical shell that tapers toward the outlet pipe. Both ends of the guide shell are fixedly mounted with bearing brackets. The bearing brackets are mounted with bearings. Both ends of the rotating shaft are respectively mounted in the bearings. The width of the reamer gradually decreases from the side close to the discharge pipe to the side away from the discharge pipe, and a plurality of the reamer are distributed on the rotating shaft in a spiral shape in a swirl flow; A cooling water pipe is spirally wound on the outer wall of the guide shell, and the cooling water pipe is connected to a cold water tank.

2. The baking soda spraying device according to claim 1, characterized in that: The bearing bracket located on the inner side of the guide shell is arched toward one side of the discharge pipe to form a conical connection structure with the guide shell.

3. The baking soda spraying device according to claim 1, characterized in that: The connecting end of the feed pipe and the discharge pipe is inclined toward the discharge end of the discharge pipe, so that the feed pipe and the discharge pipe are distributed at an acute angle.

4. The baking soda spraying device according to claim 3, characterized in that: The extended portion of the air supply pipe in the discharge pipe does not intersect with the virtual extension line of the feed pipe in the discharge pipe.

5. The baking soda spraying device according to claim 1, characterized in that: The air supply mechanism also includes an extension tube, which is sleeved on the air supply tube. The extension tube can be driven by a driving cylinder to translate toward one side of the reamer mechanism.

6. The baking soda spraying device according to claim 5, characterized in that: A sealing baffle for isolating baking soda powder is radially fixed inside the discharge pipe, a through hole matching the outer diameter of the extension tube is opened on the sealing baffle, the extension tube passes through the through hole, and the driving cylinder is located in a sealed cavity enclosed by the sealing baffle and the discharge pipe.

7. The baking soda spraying device according to claim 1, characterized in that: A three-way valve is installed on the outlet pipe, one port of the three-way valve is connected to a reverse flow air duct, and the reverse flow air duct can blow the reamer mechanism in reverse direction together with the air supply mechanism.

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