Pressure balance tank of sand mill

Abstract

The utility model discloses a pressure balancing tank of a sand mill, which relates to the technical field of balancing tanks and comprises a tank body and a stirring mechanism arranged at the bottom of the tank body, and the stirring mechanism comprises a stirring motor mounted on the lower surface of the tank body and a mounting frame fixedly mounted on the inner bottom wall of the tank body. A rotating rod fixedly connected with the stirring motor is rotatably connected to the inner wall of the mounting frame, stirring blades are fixedly connected to the top of the rotating rod, an L-shaped stirring rod is fixedly connected to the bottom of the rotating rod, a pressurizing mechanism is arranged at the top of the tank body, and an inlet pipe is fixedly connected to the upper surface of the tank body. According to the pressure balance tank for the sand mill, when the internal pressure of the sand mill is higher than that of the tank body, under the action of the pressure, sealing liquid in the sand mill enters the tank body through the bent pipe, the electromagnetic valve and the inlet pipe to reduce the internal pressure of the sand mill and balance the internal pressure of the sand mill, and when the internal pressure of the tank body is low, the circuit board starts the pressure pump through the controller.

Description

Technical Field

[0001] The utility model relates to the technical field of balance tanks, in particular to a pressure balance tank for a sand mill. Background Art

[0002] The sand mill has the advantages of high production efficiency, strong continuity, low cost, high product fineness, etc., and is widely used in the high-efficiency wet grinding of industries such as water-based coatings, pesticides, pigments, dyes, color pastes, water-based inks, pharmaceuticals, cosmetics, photosensitive materials, nanomaterials, and electronic pastes. In the sand mill industry, the rotating shafts in the grinding chamber are dynamically sealed by mechanical seal devices, and are equipped with a mechanical seal circulation protection system. The mechanical seal circulation protection system mainly includes a sealed liquid storage tank. The sealed liquid in the storage tank is pressurized and enters the sealing chamber of the mechanical seal device, and a liquid film is generated between the dynamic ring and the static ring of the mechanical seal device, thereby playing a sealing role.

[0003] During the circulation process, there will be fine materials after grinding in the sealed liquid. Under the pressure balance state, precipitation will occur in the balance tank, affecting the discharge of materials. The screen of the sand mill will be blocked with materials, and the pressure in the grinding chamber will increase, which is likely to cause damage to the mechanical seal device. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the shortcomings in the prior art that precipitation will occur in the balance tank, affecting the discharge of materials, the screen of the sand mill will be blocked with materials, and the pressure in the grinding chamber will increase, which is likely to cause damage to the mechanical seal device, and to propose a pressure balance tank for a sand mill.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: A pressure balance tank for a sand mill, including a tank body and a stirring mechanism arranged at the bottom of the tank body. The stirring mechanism includes a stirring motor installed on the lower surface of the tank body and a mounting frame fixedly installed on the inner bottom wall of the tank body. The inner wall of the mounting frame is rotationally connected to a rotating rod fixedly connected to the stirring motor. The top of the rotating rod is fixedly connected with a stirring blade, and the bottom of the rotating rod is fixedly connected with an L-shaped stirring rod. A pressurizing mechanism is arranged at the top of the tank body. An inlet pipe is fixedly connected to the upper surface of the tank body, and a discharge pipe is fixedly connected to the side surface of the bottom of the tank body.

[0006] As a further description of the above technical scheme:

[0007] A sealing gasket is embedded in the lower surface of the tank body, and the output end of the stirring motor is rotationally connected to the sealing gasket.

[0008] As a further description of the above technical scheme:

[0009] One end of the inlet pipe is provided with an electromagnetic valve, and a bent pipe is fixedly connected to the end face of the electromagnetic valve.

[0010] As a further description of the above technical solution:

[0011] One end of the elbow pipe is provided with a check valve, and a branch pipe is fixedly connected to the surface of the elbow pipe.

[0012] As a further description of the above technical solution:

[0013] The pressurizing mechanism includes a pressure pump fixedly connected to the side surface of the top of the tank body. The output end of the pressure pump is fixedly connected with an output pipe, and one end of the output pipe is fixedly connected with an electromagnetic three-way valve.

[0014] As a further description of the above technical solution:

[0015] One interface of the electromagnetic three-way valve is fixedly connected with a connecting pipe communicating with the tank body.

[0016] As a further description of the above technical solution:

[0017] The upper surface of the tank body is fixedly connected with a pressure sensor, and the upper surface of the tank body is fixedly connected with a housing. A connecting cavity fixedly connected with the pressure sensor is arranged in the middle of the housing.

[0018] As a further description of the above technical solution:

[0019] The inner wall of the housing is fixedly connected with a circuit board, and the inner wall of the housing is fixedly connected with a controller.

[0020] As a further description of the above technical solution:

[0021] The lower surface of the tank body is fixedly connected with support legs, damping shock absorbers are arranged at the bottoms of the support legs, and anti-slip pads are fixedly connected to the lower surfaces of the damping shock absorbers.

[0022] As a further description of the above technical solution:

[0023] A liquid level gauge is fixedly connected to the surface of the tank body.

[0024] The utility model has the following beneficial effects:

[0025] 1. Compared with the prior art, for the pressure balance tank of the sand mill, when the pressure inside the sand mill is higher than that inside the tank body, under the action of the pressure, the sealing liquid inside the sand mill enters the inside of the tank body through the elbow pipe, the electromagnetic valve and the inlet pipe, reducing the pressure inside the sand mill for balance. When the pressure inside the tank body is low, the circuit board turns on the pressure pump through the controller. The pressure pump inputs air into the inside of the tank body through the output pipe, the electromagnetic three-way valve and the connecting pipe, increasing the pressure inside the tank body, and then increasing the pressure inside the sand mill through the discharge pipe.

[0026] 2. Compared with the prior art, for the pressure balance tank of this sand mill, the stirring motor operates at a low power. The stirring motor drives the rotating rod to rotate, and then drives the stirring blade and the L-shaped stirring rod to rotate, so that the sealing liquid is not prone to precipitation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 FIG. is a schematic diagram of the overall structure of the pressure balance tank of the sand mill proposed by the present utility model;

[0028] Figure 2 FIG. is a schematic diagram of the internal structure of the tank body of the pressure balance tank of the sand mill proposed by the present utility model;

[0029] Figure 3 For the pressure balance tank of the sand mill proposed by the present utility model Figure 2 FIG. is an enlarged view of the structure at A in;

[0030] Figure 4 FIG. is a schematic diagram of the structure of the inlet pipe of the pressure balance tank of the sand mill proposed by the present utility model;

[0031] Figure 5 FIG. is a schematic diagram of the outer shell structure of the pressure balance tank of the sand mill proposed by the present utility model;

[0032] Figure 6 FIG. is a schematic diagram of the internal structure of the outer shell of the pressure balance tank of the sand mill proposed by the present utility model.

[0033] LEGEND DESCRIPTION:

[0034] 1. Tank body; 2. Stirring motor; 3. Rotating rod; 4. Mounting frame; 5. L-shaped stirring rod; 6. Stirring blade; 7. Sealing gasket; 8. Discharge pipe; 9. Inlet pipe; 10. Solenoid valve; 11. Elbow pipe; 12. Branch pipe; 13. Pressurizing pump; 14. Output pipe; 15. Electromagnetic three-way valve; 16. Connecting pipe; 17. Pressure sensor; 18. Outer shell; 19. Circuit board; 20. Controller; 21. Connecting cavity; 22. Support leg; 23. Damping shock absorber; 24. Anti-slip pad; 25. Liquid level gauge. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0036] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model; the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and defined, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0037] Embodiment:

[0038] Referring to Figures 1-6 , the pressure balance tank of the sand mill provided by the present utility model includes a tank body 1 and a stirring mechanism arranged at the bottom of the tank body 1. The stirring mechanism includes a stirring motor 2 installed on the lower surface of the tank body 1 and a mounting frame 4 fixedly installed on the inner bottom wall of the tank body 1. The inner wall of the mounting frame 4 is rotatably connected to a rotating rod 3 fixedly connected to the stirring motor 2. The mounting frame 4 supports the rotating rod 3. The top of the rotating rod 3 is fixedly connected to a stirring blade 6, and the bottom of the rotating rod 3 is fixedly connected to an L-shaped stirring rod 5. A pressurizing mechanism is arranged at the top of the tank body 1. The upper surface of the tank body 1 is fixedly connected to an inlet pipe 9. The bottom side of the tank body 1 is fixedly connected to a discharge pipe 8. A sealing gasket 7 is embedded in the lower surface of the tank body 1. The output end of the stirring motor 2 is rotatably connected to the sealing gasket 7. One end of the inlet pipe 9 is provided with a solenoid valve 10. The end face of the solenoid valve 10 is fixedly connected to an elbow pipe 11. One end of the elbow pipe 11 is provided with a check valve. A branch pipe 12 is fixedly connected to the surface of the elbow pipe 11. The elbow pipe 11 is connected to the sand mill at the end where the check valve is located. When the internal pressure of the sand mill is higher than that inside the tank body 1, under the action of the pressure, the sealing liquid inside the sand mill enters the inside of the tank body 1 through the elbow pipe 11, the solenoid valve 10 and the inlet pipe 9, reducing the internal pressure of the sand mill for balance. The discharge pipe 8 is connected to the feed pipe of the sand mill. Generally, a valve is arranged on the feed pipe of the sand mill, so no valve is arranged on the discharge pipe 8. When adding sealing liquid into the tank body 1, the solenoid valve 10 is opened, and the sealing liquid is added into the tank body 1 through the branch pipe 12. The stirring motor 2 operates at a low power. The stirring motor 2 drives the rotating rod 3 to rotate, and then drives the stirring blade 6 and the L-shaped stirring rod 5 to rotate, making the sealing liquid not prone to precipitation.

[0039] The pressurizing mechanism includes a pressure pump 13 fixedly connected to the side of the top of the tank body 1. The output end of the pressure pump 13 is fixedly connected with an output pipe 14. One end of the output pipe 14 is fixedly connected with an electromagnetic three-way valve 15. One interface of the electromagnetic three-way valve 15 is fixedly connected with a connecting pipe 16 communicating with the tank body 1. The upper surface of the tank body 1 is fixedly connected with a pressure sensor 17. The upper surface of the tank body 1 is fixedly connected with a housing 18. A connecting cavity 21 fixedly connected with the pressure sensor 17 is arranged in the middle of the housing 18. The inner wall of the housing 18 is fixedly connected with a circuit board 19. The inner wall of the housing 18 is fixedly connected with a controller 20. The lower surface of the tank body 1 is fixedly connected with support legs 22. A damping shock absorber 23 is arranged at the bottom of the support legs 22. The lower surface of the damping shock absorber 23 is fixedly connected with an anti-slip pad 24. A liquid level gauge 25 is fixedly connected to the surface of the tank body 1. When the internal pressure of the sand mill is low, the pressure pump 13 is started. The pressure pump 13 inputs air into the tank body 1 through the output pipe 14, the electromagnetic three-way valve 15 and the connecting pipe 16 to increase the internal pressure of the tank body 1. When the internal pressure of the tank body 1 is high, the electromagnetic three-way valve 15 is opened, and the air inside the tank body 1 is discharged from the electromagnetic three-way valve 15 through the connecting pipe 16. The liquid level gauge 25 detects the remaining amount of the sealing liquid inside the tank body 1.

[0040] Working principle: The pressure inside the tank body 1 is detected by the pressure sensor 17. When the internal pressure of the tank body 1 is low, the circuit board 19 turns on the pressure pump 13 through the controller 20. The pressure pump 13 inputs air into the tank body 1 through the output pipe 14, the electromagnetic three-way valve 15 and the connecting pipe 16 to increase the internal pressure of the tank body 1. When the internal pressure of the tank body 1 is high, the circuit board 19 converts the opening direction of the electromagnetic three-way valve 15 through the controller 20, and the air inside the tank body 1 is discharged from the electromagnetic three-way valve 15 through the connecting pipe 16 to reduce the internal pressure of the tank body 1. The stirring motor 2 operates at a low power. The stirring motor 2 drives the rotating rod 3 to rotate, and then drives the stirring blades 6 and the L-shaped stirring rod 5 to rotate, so that the sealing liquid is not prone to precipitation. When the pressure inside the sand mill is higher than that inside the tank body 1, under the action of the pressure, the sealing liquid inside the sand mill enters the inside of the tank body 1 through the elbow pipe 11, the solenoid valve 10 and the inlet pipe 9 to reduce the pressure inside the sand mill for balance.

[0041] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, 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 sand mill pressure balance tank, comprising a tank body (1) and a stirring mechanism arranged at the bottom of the tank body (1), characterized in that: The stirring mechanism comprises a stirring motor (2) mounted on the lower surface of the tank body (1) and a mounting frame (4) fixedly mounted on the inner bottom wall of the tank body (1); the inner wall of the mounting frame (4) is rotatably connected to a rotating rod (3) fixedly connected to the stirring motor (2); the top of the rotating rod (3) is fixedly connected to a stirring blade (6); the bottom of the rotating rod (3) is fixedly connected to an L-shaped stirring rod (5); a pressurizing mechanism is arranged on the top of the tank body (1); an inlet pipe (9) is fixedly connected to the upper surface of the tank body (1); and a discharge pipe (8) is fixedly connected to the bottom side of the tank body (1).

2. The sand mill pressure balance tank according to claim 1, characterized in that: A sealing gasket (7) is embedded in the lower surface of the tank body (1), and the output end of the stirring motor (2) is rotatably connected to the sealing gasket (7).

3. The sand mill pressure balance tank according to claim 1, characterized in that: A solenoid valve (10) is provided at one end of the inlet pipe (9), and a bent pipe (11) is fixedly connected to the end surface of the solenoid valve (10).

4. The sand mill pressure balance tank according to claim 3, characterized in that: A one-way valve is provided at one end of the curved pipe (11), and a branch pipe (12) is fixedly connected to the surface of the curved pipe (11).

5. The sand mill pressure balance tank according to claim 1, characterized in that: The pressurizing mechanism comprises a pressurizing pump (13) fixedly connected to the top side of the tank body (1), the output end of the pressurizing pump (13) is fixedly connected to an output pipe (14), and one end of the output pipe (14) is fixedly connected to an electromagnetic three-way valve (15).

6. The sand mill pressure balance tank according to claim 5, characterized in that: One interface of the electromagnetic three-way valve (15) is fixedly connected to a connecting pipe (16) that is in communication with the tank body (1).

7. The sand mill pressure balance tank according to claim 1, characterized in that: An air pressure sensor (17) is fixedly connected to the upper surface of the tank body (1), an outer shell (18) is fixedly connected to the upper surface of the tank body (1), and a connecting cavity (21) fixedly connected to the air pressure sensor (17) is provided in the middle of the outer shell (18).

8. The sand mill pressure balance tank according to claim 7, characterized in that: A circuit board (19) is fixedly connected to the inner wall of the shell (18), and a controller (20) is fixedly connected to the inner wall of the shell (18).

9. The sand mill pressure balance tank according to claim 1, characterized in that: The lower surface of the tank body (1) is fixedly connected to a support leg (22), the bottom of the support leg (22) is provided with a damping shock absorber (23), and the lower surface of the damping shock absorber (23) is fixedly connected to an anti-slip pad (24).

10. The sand mill pressure balance tank according to claim 1, characterized in that: A liquid level meter (25) is fixedly connected to the surface of the tank body (1).

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