Printing ink storage tank

Abstract

The printing ink storage tank comprises a tank body with an opening in the top end and an upper cover covering the top end of the tank body, the upper cover is in threaded connection with the tank body, a connecting cylinder used for being connected with external air exhaust equipment is fixedly arranged at the top end of the upper cover, and an adjusting assembly used for preventing external air from entering is arranged in the connecting cylinder. A pressure measuring assembly used for monitoring the air pressure in the tank body is further arranged on one side of the upper cover. According to the utility model, air in the tank body is pumped out by arranging the connecting cylinder and matching with external air pumping equipment, so that the external air is prevented from entering the tank body, generating oxidation reaction with printing ink and influencing the quality of the printing ink, and the tank body is conveniently sealed after air pumping is completed by arranging the adjusting assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of printing ink storage, in particular to a printing ink storage tank. Background Art

[0002] Ink is a uniform mixture of colored bodies (such as pigments, dyes, etc.), binders, fillers and additives. It can be printed and dried on the printed object. It is a colored and fluid paste-like adhesive. Therefore, color (hue), body (rheological properties such as viscosity and fluidity) and drying properties are the three most important properties of ink.

[0003] The storage of ink has a significant impact on the quality of the ink. However, most existing ink storage systems use metal lids that snap onto storage tanks and are sealed with sealants. Once the sealed tanks are opened and used, they are difficult to reseal, and the oxygen in the sealed tanks is also difficult to remove, causing the printed ink to oxidize and dry, affecting the ink quality. Utility Model Content

[0004] The main purpose of the utility model is to provide a printing ink storage tank to solve the problem in the prior art that after the sealed tank is opened, the oxygen inside the sealed tube is difficult to be removed, resulting in oxidation and drying of the printing ink, which affects the ink quality.

[0005] In order to solve the above problems, the present invention adopts the following technical solution: a printing ink storage tank, comprising a tank body with an open top and an upper cover covering the top of the tank body, the upper cover being screwed to the tank body, a connecting tube for connecting to an external air extraction device being fixed at the top of the upper cover, an adjusting component for preventing external air from entering being provided in the connecting tube, and a pressure measuring component for monitoring the internal air pressure of the tank body being also provided on one side of the upper cover.

[0006] Furthermore, an air outlet and an air inlet are respectively provided at the top and bottom ends of the connecting tube, and the adjusting assembly includes an adjusting rod and a plug. The cross-section of the plug is a trapezoidal structure that is wide at the top and narrow at the bottom. The bottom end of the plug is inserted into the air inlet, one end of the adjusting rod is fixedly connected to the plug, and the other end of the adjusting rod passes through the air outlet and extends to the outside of the connecting tube.

[0007] Furthermore, a first spring is provided in the connecting tube. The first spring is sleeved on the outside of the adjusting rod. Two ends of the first spring are respectively in contact with the top surface of the connecting tube and the plug.

[0008] Furthermore, the pressure measuring assembly includes a transparent tube fixed on the upper cover, and the top and bottom ends of the transparent tube are respectively provided with a first air vent and a second air vent. An elastic T-shaped block is slidably connected inside the transparent tube, and the bottom end of the T-shaped block is passed through the second air vent and abuts against the side wall of the second air vent. A second spring is provided inside the transparent tube for preventing the T-shaped block from moving into the interior of the tank body.

[0009] Furthermore, the T-shaped block includes a sealing block and a column fixed on the bottom surface of the sealing block, the outer peripheral surface of the sealing block abuts against the inner wall of the transparent tube, the bottom end of the column is passed through the second air vent, and the two ends of the second spring respectively abut against the bottom surface of the sealing block and the bottom end of the transparent tube.

[0010] Furthermore, the outer surface of the sealing block is coated with colored paint.

[0011] Furthermore, the T-shaped block is made of rubber.

[0012] Furthermore, a plurality of scale lines are formed on the outer side wall of the transparent tube, and the plurality of scale lines are evenly arranged along the axial direction of the transparent tube.

[0013] Furthermore, the outer edge of the top of the tank body is provided with a first beveled surface, the upper cover is provided with a second beveled surface corresponding to the first beveled surface, and a rubber ring is sandwiched between the first beveled surface and the second beveled surface.

[0014] The beneficial effects of the utility model are:

[0015] 1. By setting up a connecting tube and cooperating with external exhaust equipment to extract the air inside the tank, it can prevent external air from entering the tank and producing an oxidation reaction with the printing ink, affecting the ink quality. By setting up an adjustment component, it is convenient to seal the tank after the exhaust is completed;

[0016] 2. By setting up a pressure measuring assembly, the staff can regularly observe the position of the T-shaped block of the pressure measuring assembly to determine whether there is a problem of poor sealing or air leakage in the tank;

[0017] 3. The upper cover is screwed to the tank body to facilitate disassembly. At the same time, the first and second beveled surfaces are provided to cooperate with the rubber ring to increase the sealing performance inside the tank body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0019] Figure 1 This is a three-dimensional diagram of the printing ink storage tank of the present invention;

[0020] Figure 2 This is a schematic cross-sectional view of the printing ink storage tank of the present invention.

[0021] Description of Reference Numerals

[0022] 1. Tank body; 11. First beveled section; 2. Upper cover; 21. Second beveled section; 3. Connecting tube; 31. Air outlet; 32. Air inlet; 4. Adjusting assembly; 41. Adjusting rod; 42. Plug; 43. First spring; 5. Pressure measuring assembly; 51. Transparent tube; 511. First vent hole; 512. Second vent hole; 513. Scale pattern; 52. T-shaped block; 521. Sealing block; 522. Column; 53. Second spring; 6. Rubber ring. DETAILED DESCRIPTION

[0023] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0024] See also Figures 1 to 2 As shown, a printing ink storage tank includes a tank body 1, a top cover 2, a connecting tube 3, an adjustment assembly 4, and a pressure measuring assembly 5. The tank body 1 is a cylindrical structure with an open top. The top cover 2 covers the top of the tank body 1 and is used to open or close the tank body 1. In this embodiment, the top cover 2 is screwed to the tank body 1 to form a sealed cavity within the tank body 1. Preferably, the outer edge of the top of the tank body 1 is provided with a first beveled surface 11, and the top cover 2 is provided with a second beveled surface 21 corresponding to the first beveled surface 11. A rubber ring 6 is sandwiched between the first beveled surface 11 and the second beveled surface 21.

[0025] Specifically, an annular groove (not shown) is provided on the first beveled surface 11 or the second beveled surface 21, and a rubber ring 6 is disposed within the annular groove. During operation, the upper cover 2 is rotated to threadably engage the upper cover 2 with the can body 1, and the second beveled surface 21 is moved toward the first beveled surface 11, thereby sandwiching the rubber ring 6 between the upper cover 2 and the can body 1. The provision of the rubber ring 6 enhances the sealing of the interior of the can body 1, preventing outside air from entering the can body 1 and causing an oxidation reaction with the printing ink, thereby affecting the ink quality.

[0026] Connecting tube 3 is fixedly mounted on the top of upper cover 2 and is used to connect to an external exhaust device. During operation, the external exhaust device is connected to connecting tube 3 to exhaust the air within tank body 1, thereby preventing the air from causing oxidation and drying of the printing ink, thereby affecting the ink quality. Specifically, the exhaust device can be a manual exhaust pump or an electric exhaust pump as known in the art, and is not limited here.

[0027] In this embodiment, the connecting tube 3 is a cylindrical structure with two ends open. The top and bottom ends of the connecting tube 3 are respectively provided with an air outlet 31 and an air inlet 32. When the upper cover 2 is closed on the top of the tank body 1, the air inlet 32 is connected to the interior of the tank body 1. The adjustment assembly 4 is arranged inside the connecting tube 3 and is used to prevent external air from entering the tank body 1. The adjustment assembly 4 includes an adjustment rod 41 and a plug 42. The plug 42 is slidably connected to the connecting tube 3, and its bottom end is inserted into the air inlet 32. Specifically, the cross-section of the plug 42 is a trapezoidal structure with a wide top and a narrow bottom. The maximum outer diameter of the plug 42 is larger than the inner diameter of the air inlet 32, so that the plug 42 can easily block the air inlet 32. One end of the adjustment rod 41 is fixedly connected to the plug 42, and the other end of the adjustment rod 41 extends through the air outlet 31 to the outside of the connecting tube 3. It should be noted that the diameter of the other end of the adjustment rod 41 is smaller than the diameter of the air outlet 31, so that the air in the tank body 1 can flow out smoothly.

[0028] During implementation, the staff connects the external vacuum equipment with the connecting tube 3 to extract the air in the tank body 1. During operation, due to the suction force of the external vacuum equipment, the adjusting rod 41 and the plug 42 move away from the tank body 1, so that the air in the tank body 1 is extracted by the external vacuum equipment. When the external vacuum equipment stops working, the adjusting rod 41 and the plug 42 move toward the tank body 1 by their own gravity until the plug 42 is re-inserted and sealed in the air inlet 32. At the same time, since the air in the tank body 1 is extracted, the tank body 1 is in a negative pressure state at this time, so the plug 42 will be firmly adsorbed in the air inlet 32.

[0029] Preferably, a first spring 43 is further provided in the connecting tube 3. The first spring 43 is sleeved on the outside of the adjusting rod 41, and the two ends of the first spring 43 respectively abut against the top surface of the connecting tube 3 and the plug 42. The first spring 43 allows the plug 42 to be quickly reset after the external air extraction device has completed its operation, thereby preventing some external air from flowing back into the tank body 1.

[0030] It should be noted that when the upper cover 2 needs to be opened, since the other end of the adjusting rod 41 extends through the air outlet 31 to the outside of the connecting tube 3, the staff can pull the adjusting rod 41 to move away from the tank body 1, thereby driving the plug 42 to disengage from the air inlet 32. At this time, external air can enter the tank body 1, so that the air pressure inside and outside the tank body 1 reaches balance, and then the staff can rotate and open the upper cover 2 to open the tank body 1.

[0031] The pressure measuring assembly 5 is located on one side of the upper cover 2 and is used to monitor the air pressure inside the tank body 1 to prevent external air from entering the tank body 1 due to reasons such as a poor seal. The pressure measuring assembly 5 includes a transparent tube 51, a T-shaped block 52, and a second spring 53. The transparent tube 51 is a circular tube made of a transparent material to facilitate observation by staff. The top and bottom ends of the transparent tube 51 are respectively provided with a first vent hole 511 and a second vent hole 512. When the upper cover 2 is closed over the tank body 1, the second vent hole 512 communicates with the interior of the tank body 1.

[0032] The T-shaped block 52 is made of rubber and has a T-shaped cross-section. It is slidably connected to the transparent tube 51. Its bottom end passes through the second vent hole 512 and abuts against the side wall of the second vent hole 512 to prevent external air from entering the tank body 1 through the second vent hole 512. It should be noted that although the bottom end of the T-shaped block 52 is slidably connected to the second vent hole 512, the tank body 1 can still be kept sealed.

[0033] In this embodiment, the T-shaped block 52 includes a sealing block 521 and a column 522 fixed on the bottom surface of the sealing block 521. The outer peripheral surface of the sealing block 521 abuts against the inner wall of the transparent tube 51, and the bottom end of the column 522 is passed through the second vent hole 512. By the outer peripheral surface of the sealing block 521 abuts against the inner wall of the transparent tube 51, and the bottom end of the column 522 is passed through the second vent hole 512 and abuts against the second vent hole 512, the purpose of doubly preventing external air from entering the interior of the tank body 1 through the first vent hole 511 and the second vent hole 512 is achieved.

[0034] The second spring 53 is arranged in the transparent tube 51 to prevent the T-shaped block 52 from moving into the inside of the tank body 1. Specifically, the second spring 53 is sleeved on the outside of the column 522, and the two ends of the second spring 53 are respectively in contact with the bottom surface of the sealing block 521 and the bottom end of the transparent tube 51.

[0035] During operation, the external vacuum device extracts the air from the tank body 1 through the connecting tube 3. At this time, the tank body 1 is in a negative pressure state. When the pressure is greater than the elastic force of the second spring 53, the T-shaped block 52 is drawn into the interior of the tank body 1. In this way, the staff can judge the negative pressure (vacuum) state in the tank body 1 by observing the relative height of the T-shaped block 52 relative to the transparent tube 51. This allows the staff to check whether the tank body 1 has a poor seal or air leakage. Preferably, the outer surface of the sealing block 521 is coated with a colored paint, and the specific color can be red, green, etc., which is not limited here, to facilitate observation by the staff. Furthermore, a plurality of scale lines 513 are opened on the outer wall of the transparent tube 51, and the plurality of scale lines 513 are evenly arranged along the axial direction of the transparent tube 51. This allows the staff to observe the specific position of the T-shaped block 52 on the scale line 513 to determine the air pressure in the tank body 1.

[0036] It should be noted that when the tank body 1 is not sealed tightly or leaks, the negative pressure inside the tank body 1 decreases. At this time, the elastic force of the second spring 53 causes the T-shaped block 52 to move away from the tank body 1, thereby allowing the staff to determine that the tank body 1 is not sealed tightly.

[0037] During the specific implementation of the present invention, when the ink needs to be sealed and stored, the staff will cover the upper cover 2 on the opening at the top of the tank body 1, screw the upper cover 2 to the tank body 1 by rotating the upper cover 2, and move the second bevel 21 in the direction of the first bevel 11, so that the rubber ring 6 is sandwiched between the upper cover 2 and the tank body 1 to increase the sealing inside the tank body 1. The external air extraction device is then connected to the connecting tube 3 to extract the air in the tank body 1 by the external air extraction device, while observing the relative height of the T-shaped block 52 of the pressure measuring assembly 5 to the transparent tube 51. When the air extraction device is completed, the first spring 43 is used to reset the plug 42 to seal the tank body 1. The staff can then regularly observe the position of the T-shaped block 52 of the pressure measuring assembly 5 to determine whether there is a problem of poor sealing or air leakage in the tank body 1, so as to prevent external air from entering the tank body 1 and producing an oxidation reaction with the printing ink, thereby affecting the ink quality.

[0038] The above description is only a preferred embodiment of the present invention. Obviously, the described embodiment is only a part of the embodiment of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

Claims

1. A printing ink storage tank, comprising a tank body (1) with an open top and an upper cover (2) covering the top of the tank body (1), characterized in that: The upper cover (2) is screwed to the tank body (1), and a connecting tube (3) for connecting to an external air extraction device is fixedly provided at the top end of the upper cover (2). A regulating component (4) for preventing external air from entering is provided in the connecting tube (3). A pressure measuring component (5) for monitoring the internal air pressure of the tank body (1) is also provided on one side of the upper cover (2).

2. The printing ink storage tank according to claim 1, characterized in that: The top and bottom ends of the connecting tube (3) are respectively provided with an air outlet (31) and an air inlet (32). The adjusting assembly (4) comprises an adjusting rod (41) and a plug (42). The cross section of the plug (42) is a trapezoidal structure that is wide at the top and narrow at the bottom. The bottom end of the plug (42) is inserted into the air inlet (32). One end of the adjusting rod (41) is fixedly connected to the plug (42), and the other end of the adjusting rod (41) passes through the air outlet (31) and extends to the outside of the connecting tube (3).

3. The printing ink storage tank according to claim 2, characterized in that: A first spring (43) is further provided in the connecting tube (3). The first spring (43) is sleeved on the outside of the adjusting rod (41). Two ends of the first spring (43) respectively abut against the top surface of the connecting tube (3) and the plug (42).

4. The printing ink storage tank according to claim 1, characterized in that: The pressure measuring assembly (5) comprises a transparent cylinder (51) fixed on the upper cover (2), the top and bottom ends of the transparent cylinder (51) are respectively provided with a first vent hole (511) and a second vent hole (512), an elastic T-shaped block (52) is slidably connected in the transparent cylinder (51), the bottom end of the T-shaped block (52) is passed through the second vent hole (512) and abuts against the side wall of the second vent hole (512), and a second spring (53) is provided in the transparent cylinder (51) for preventing the T-shaped block (52) from moving into the interior of the tank body (1).

5. The printing ink storage tank according to claim 4, characterized in that: The T-shaped block (52) comprises a sealing block (521) and a column (522) fixed on the bottom surface of the sealing block (521); the outer peripheral surface of the sealing block (521) abuts against the inner wall of the transparent tube (51); the bottom end of the column (522) is passed through the second vent hole (512); and the two ends of the second spring (53) abut against the bottom surface of the sealing block (521) and the bottom end of the transparent tube (51), respectively.

6. The printing ink storage tank according to claim 5, characterized in that: The outer surface of the sealing block (521) is coated with colored paint.

7. The printing ink storage tank according to claim 4, characterized in that: The material of the T-shaped block (52) is rubber.

8. The printing ink storage tank according to claim 6, characterized in that: A plurality of scale lines (513) are provided on the outer side wall of the transparent tube (51), and the plurality of scale lines (513) are evenly arranged along the axial direction of the transparent tube (51).

9. The printing ink storage tank according to claim 1, characterized in that: The outer edge of the top end of the tank body (1) is provided with a first beveled surface (11), the upper cover (2) is provided with a second beveled surface (21) corresponding to the first beveled surface (11), and a rubber ring (6) is sandwiched between the first beveled surface (11) and the second beveled surface (21).

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