Grinding ball online adding device for sand mill and grinding ball online adding method

Abstract

The invention discloses an online adding device for grinding balls for a sand mill, comprising a sealed grinding ball refilling tank body, wherein the upper part of the grinding ball refilling tank body is provided with a first feed port and a second feed port, and the bottom of the grinding ball refilling tank body is provided with a discharge port; the grinding ball refilling tank body is sealedly connected with a feeding hopper through the first feed port, and a first control ball valve is provided between the feeding hopper and the grinding tank body; the grinding ball refilling tank body is sealedly connected with a water inlet pipe provided with a second control ball valve and an air inlet pipe provided with a third control ball valve through the second feed port; the discharge port of the grinding ball refilling tank body is sealedly connected with a grinding ball adding port of a sand mill through a discharge pipe, and a diaphragm valve is provided on the discharge pipe, and a transparent observation window is also provided between the discharge port and the sand mill. The device realizes an online adding method for grinding balls without shutting down the sand mill, which is beneficial to reducing the failure rate of the sand mill and ensuring production efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of sand mills, and relates to a grinding ball adding technology, in particular to an online grinding ball adding device and a grinding ball online adding method for a sand mill. Background Art

[0002] During the use of the sand mill, the grinding balls will inevitably wear out. When the grinding balls wear to a certain extent, the filling rate of the grinding balls will decrease, resulting in a decrease in grinding efficiency, so a certain amount of grinding balls needs to be added. Especially in large-capacity sand mills, the grinding balls are added frequently. The original adding method requires the equipment to be stopped and the grinding chamber pressure to drop to zero before adding. In automated production and production lines, frequent shutdowns will cause production interruptions, thus affecting the normal operation of the entire production line. Frequent startups will also increase the failure rate of the sand mill. Summary of the invention

[0003] In order to overcome the above problems in the prior art, the present invention provides an online grinding ball adding device and a grinding ball online adding method for a sand mill, which can add grinding balls when the sand mill is operating normally, and the process of adding grinding balls does not interrupt production.

[0004] In order to achieve the purpose of the present invention, the technical solution adopted by the present invention is: an online grinding ball adding device for a sand mill, comprising a closed grinding ball refilling tank body, a first feed port and a second feed port are provided on the upper part of the grinding ball refilling tank body, and a discharge port is provided at the bottom of the grinding ball refilling tank body; the grinding ball refilling tank body is tightly connected with the feeding hopper through the first feed port, and a first control ball valve is provided between the feeding hopper and the grinding ball refilling tank body; the grinding ball refilling tank body is tightly connected with a water inlet pipe provided with a second control ball valve and an air inlet pipe provided with a third control ball valve through the second feed port; the discharge port of the grinding ball refilling tank body is tightly connected with the grinding ball adding port of the sand mill through a discharge pipe, a diaphragm valve is provided on the discharge pipe, and a transparent observation window is also provided between the discharge port and the sand mill.

[0005] Furthermore, a filter is provided in the feeding hopper to prevent grinding balls exceeding the designed size from entering the sand mill.

[0006] Furthermore, there is one second feed port, which is respectively connected to the air inlet pipe and the water inlet pipe through a three-way pipe.

[0007] In order to protect the mechanical seal, further, an intake solenoid valve is provided on the intake pipe, and the intake solenoid valve and the third control ball valve are arranged in sequence along the gas intake direction.

[0008] Furthermore, a pressure gauge is provided on the water inlet pipe, and the second control ball valve and the pressure gauge are arranged in sequence along the water inlet direction. The pressure gauge can accurately determine whether the pressure in the grinding ball refilling tank reaches the design value, so that the grinding balls can enter the grinding balls smoothly.

[0009] A method for adding grinding balls online is based on the above-mentioned device for adding grinding balls online for a sand mill, and comprises the following steps:

[0010] (1) Close the third control ball valve and the diaphragm valve, open the first control ball valve and the second control ball valve, and inject water into the grinding ball refilling tank through the water inlet pipe. When the water level is in the hopper, close the second control ball valve, and then add the designed amount of grinding balls into the hopper;

[0011] (2) Then close the first control ball valve and open the third control ball valve, introduce gas to increase pressure, let the pressure enter the grinding balls and refill the tank, then open the diaphragm valve, the grinding balls enter the sand mill through the discharge port, and observe through the observation window whether all the grinding balls have been added.

[0012] Compared with the prior art, the technical effects achieved by the present invention are as follows: through the on-line adding device and on-line adding method of grinding balls for sand mill of the present invention, water is injected until the water level is located in the feeding hopper and then the grinding balls are added, which can prevent the grinding balls from running out. Both hydraulic power and pneumatic power are indispensable, so that the grinding balls can enter the grinder, realizing the on-line adding of grinding balls without shutting down the grinder, which is beneficial to reducing the failure rate of the grinder and ensuring production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram (front view) of an online adding device for grinding balls for a sand mill in an embodiment of the present invention.

[0014] Figure 2 It is a structural schematic diagram (left view) of an online adding device for grinding balls for a sand mill in an embodiment of the present invention.

[0015] The reference numerals in the figure are: 1. diaphragm valve; 2. first ball valve; 3. second ball valve; 4. third ball valve; 5. air intake solenoid valve; 6. pressure gauge; 7. feeding hopper; 8. filter screen; 9. transparent observation window; 10. grinding ball refilling tank; 11. discharge pipe; 12. water inlet pipe; 13. air intake pipe. DETAILED DESCRIPTION

[0016] The present invention is further described in detail below in conjunction with embodiments:

[0017] See Figure 1 and Figure 2A grinding ball online adding device for a sand mill comprises a closed grinding ball refilling tank body 10, wherein a first feed port and a second feed port are provided at the upper portion of the grinding ball refilling tank body 10, and a discharge port is provided at the bottom of the grinding ball refilling tank body 10; the grinding ball refilling tank body 10 is tightly connected to a feeding hopper 7 through the first feed port, and a first control ball valve 2 is provided between the feeding hopper 7 and the grinding ball refilling tank body 10; the grinding ball refilling tank body 10 is tightly connected to a water inlet pipe 12 provided with a second control ball valve 3 and an air inlet pipe 13 provided with a third control ball valve 4 through the second feed port; the discharge port of the grinding ball refilling tank body 10 is tightly connected to a grinding ball adding port of a sand mill through a discharge pipe 11, a diaphragm valve 1 is provided on the discharge pipe 11, and a transparent observation window 9 is also provided between the discharge port and the sand mill.

[0018] Specifically, a filter screen 8 is provided in the hopper 7 to prevent grinding balls exceeding the designed size from entering the sand mill. There is one second feed port, which is connected to the air inlet pipe 13 and the water inlet pipe 12 respectively through a three-way pipe. In order to protect the mechanical seal, an air inlet solenoid valve 5 is also provided on the air inlet pipe 13, and the air inlet solenoid valve 5 and the third control ball valve 4 are arranged in sequence along the gas inlet direction. A pressure gauge 6 is also provided on the water inlet pipe 12, and the second control ball valve 3 and the pressure gauge 6 are arranged in sequence along the water inlet direction. The pressure gauge 6 can accurately determine whether the pressure in the grinding ball refilling tank 10 reaches the designed value, so that the grinding balls can enter the grinding balls smoothly.

[0019] A method for adding grinding balls online, based on the device for adding grinding balls online for a sand mill of the present embodiment, comprises the following steps:

[0020] 1 The solenoid valve is electrically connected and locked. Close the third control ball valve 4 and the diaphragm valve 1, open the first control ball valve 2 and the second control ball valve 3, and inject water into the grinding ball refilling tank 10 through the water inlet pipe 12. When the water level is higher than the filter screen 8, close the second control ball valve 3, and then add the designed amount of grinding balls into the feeding hopper 7;

[0021] 2 Then close the first control ball valve 2, and open the third control ball valve 4, pass gas to increase pressure, let the pressure enter the grinding balls and refill the tank 10, open the air inlet solenoid valve 5, and judge the maximum internal pressure of 3bar through the pressure gauge 6, and then open the diaphragm valve 1. Under the action of pressure and water flow, the grinding balls enter the sand mill through the discharge port, and observe whether all the grinding balls have been added through the observation window.

[0022] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

[0023] The present invention is not limited to the above-mentioned specific implementations. A person skilled in the art can implement the present invention by adopting other various specific implementations according to the content disclosed in the present invention, or any simple changes or modifications made to the design structure and ideas of the present invention fall within the protection scope of the present invention. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

Claims

1. A grinding ball online adding method, characterized in that: The method is based on an online grinding ball adding device for a sand mill, the online grinding ball adding device for a sand mill comprising a sealed grinding ball refilling tank (10), the upper part of the grinding ball refilling tank (10) being provided with a first feed inlet and a second feed inlet, and the bottom of the grinding ball refilling tank (10) being provided with a discharge port; the grinding ball refilling tank (10) being sealedly connected to a feeding hopper (7) via the first feed inlet, and a first control ball valve (2) being provided between the feeding hopper (7) and the grinding ball refilling tank (10); The grinding ball refilling tank (10) is hermetically connected to a water inlet pipe (12) provided with a second control ball valve (3) and an air inlet pipe (13) provided with a third control ball valve (4) through a second feed port; the discharge port of the grinding ball refilling tank (10) is hermetically connected to a grinding ball adding port of a sand mill through a discharge pipe (11), a diaphragm valve (1) being provided on the discharge pipe (11), and a transparent observation window (9) being provided between the discharge port and the sand mill; the grinding ball feeding port of the feeding hopper (7) is always open; The adding method comprises the following steps: The third control ball valve (4) and the diaphragm valve (1) are closed, the first control ball valve (2) and the second control ball valve (3) are opened, water is injected into the grinding ball refilling tank (10) through the water inlet pipe (12), and when the water level is in the feeding hopper (7), the second control ball valve (3) is closed, and then a designed amount of grinding balls is added into the feeding hopper (7); Then, the first control ball valve (2) is closed, and the third control ball valve (4) is opened, and gas is introduced to increase pressure, so that the pressure enters the grinding balls and refills the tank (10), and then the diaphragm valve (1) is opened, and the grinding balls enter the sand mill through the discharge port. It is observed through the transparent observation window (9) whether all the grinding balls have been added.

2. The grinding ball online adding method according to claim 1, characterized in that: A filter screen (8) is provided in the feeding hopper (7) to prevent grinding balls exceeding the designed size from entering the sand mill.

3. The grinding ball online adding method according to claim 1, characterized in that: There is one second feed port, which is respectively connected to the air inlet pipe (13) and the water inlet pipe (12) through a tee pipe.

4. The method for adding grinding balls online according to claim 1, characterized in that: The air intake pipe (13) is also provided with an air intake solenoid valve (5), and the air intake solenoid valve (5) and the third control ball valve (4) are arranged in sequence along the gas intake direction.

5. The grinding ball online adding method according to claim 1, characterized in that: The water inlet pipe (12) is also provided with a pressure gauge (6), and the second control ball valve (3) and the pressure gauge (6) are arranged in sequence along the water inlet direction.

Images