Self-closing leakage-proof valve bag

Abstract

The utility model discloses a self-closing type material leakage prevention valve bag which comprises a valve bag body and a material opening formed in the front face of the valve bag body, and a material inlet and outlet valve opening is fixedly formed in the inner wall of the material opening. The sealing assembly is used for conducting compression sealing on the feeding and discharging valve port and comprises a strip-shaped frame and a lower pressing plate, the strip-shaped frame is fixedly arranged on the front face of the valve bag body and corresponds to the feeding and discharging valve port, and the lower pressing plate is arranged on the inner wall of the strip-shaped frame in a sliding mode. By means of the sealing assembly, in the actual use process of the valve bag, when the valve bag is filled with raw materials, the feeding and discharging valve port can be pressed downwards to be flat and inserted into the strip-shaped frame, the rotating knob is rotated, the bottom of the lower pressing plate effectively presses and fixes the feeding and discharging valve port to the inner bottom of the strip-shaped frame, and therefore the valve bag is convenient to use. Therefore, the feeding and discharging valve port is effectively blocked, and the defect that raw materials are prone to leaking in the prior art is effectively overcome.

Description

Technical Field

[0001] The utility model relates to the technical field of valve bags, in particular to a self-closing anti-leakage valve bag. Background Art

[0002] The valve bag is a commonly used packaging bag with the characteristics of improving packaging efficiency, facilitating transportation, high firmness and low breakage rate. The existing patent announcement number CN218259678U discloses a leak-proof valve port of a valve bag, which includes a bag body, a valve port opened on one side of the top of the bag body, a feeding bag tube passed through the bottom inside the valve port, the feeding bag tube is fixed to the inner wall of the valve port, the inner side of the valve port is located on the upper side of the feeding bag tube and is provided with an air outlet, and the feeding bag tube is folded and inserted into the inner side of the air outlet; the utility model enables the material inside the valve bag to be re-sealed at the valve port position of the bag body when it has not been used up, thereby avoiding the problem that the valve port position causes the bag body to move and the material to fall after unpacking, thereby improving the practicality of the structure, and when the inner side of the bag body is filled, the gas inside the bag body can be discharged through the air outlet, thereby avoiding the material being sprayed outward by the air pressure inside the bag body during the filling process.

[0003] Regarding the above-mentioned related technologies, the inventor believes that the following defects exist: the technical solution proposed by the above-mentioned patent technology only relies on Velcro for bonding and sealing when actually sealing the valve bag, and folds it for sealing at the same time. Although it can achieve a sealing effect, when the valve bag is filled with flowable granular raw materials, during transportation, these granular raw materials can easily stretch the bonded Velcro, thereby causing the raw materials to leak out. That is, the technical solution proposed by the above-mentioned patent technology has the defect of easily leaking raw materials.

[0004] Therefore, we proposed a self-closing anti-leakage valve bag to solve the above problems. Utility Model Content

[0005] In view of the shortcomings of the prior art, the utility model provides a self-closing anti-leakage valve bag, which solves the problem of easy leakage of raw materials raised in the background art.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a self-closing anti-leakage valve bag, comprising:

[0007] The valve bag body and the material port are provided on the front of the valve bag body, and the inner wall of the material port is provided with the inlet and outlet valve ports;

[0008] A closing assembly is used to compress and close the inlet and outlet valve ports. The closing assembly includes a strip frame fixed to the front of the valve bag body and corresponding to the inlet and outlet valve ports, and a lower pressure plate slidably arranged on the inner wall of the strip frame. The inlet and outlet valve ports are pressed against the inner bottom of the strip frame through the lower pressure plate. The closing assembly also includes a rotating knob arranged on the outer surface of the strip frame for driving the lower pressure plate to move downward.

[0009] Preferably, a strip groove is provided on the inner top wall of the strip frame, and a bidirectional screw is rotatably provided on the inner wall of the strip groove, one end of the bidirectional screw extends to the outer surface of the strip frame, and the rotating knob is fixed to the end of the bidirectional screw.

[0010] Preferably, two symmetrical sliding blocks are slidably provided on the inner wall of the strip groove, and the side surfaces of the two sliding blocks are provided with threaded holes that are threadedly connected to the outer surface of the bidirectional lead screw.

[0011] Preferably, two symmetrical rotation frames are fixedly provided on the upper surface of the lower pressure plate, rotation grooves are opened on the lower surfaces of the two sliding blocks, and a first rotating shaft is fixedly provided on the inner wall of the rotating groove, and a top plate is rotatably provided on the surface of the first rotating shaft.

[0012] Preferably, a second rotating shaft is fixed to the inner wall of the rotating frame, and the ends of the two top plates away from the first rotating shaft are respectively rotatably connected to the surfaces of the two second rotating shafts, and the top and bottom surfaces of the top plates are respectively provided with rotating holes for the rotation of the first rotating shaft and the second rotating shaft.

[0013] Preferably, both side surfaces of the lower pressing plate are fixedly provided with limiting blocks, and both side inner walls of the bar frame are provided with limiting sliding grooves for the limiting blocks to slide.

[0014] Preferably, the lower surface of the lower pressing plate is evenly provided with a plurality of anti-slip protrusions in a rectangular array, and the material of the plurality of anti-slip protrusions is elastic rubber.

[0015] Beneficial effects

[0016] The utility model provides a self-closing anti-leakage valve bag. Compared with the existing technology, it has the following advantages:

[0017] The self-closing anti-leakage valve bag is provided with a closing component, so that during actual use of the valve bag, when the interior of the valve bag is filled with raw materials, the inlet and outlet valve ports can be pressed downward and inserted into the interior of the bar frame, and the rotating knob is turned to make the bottom of the lower pressure plate effectively press and fix the inlet and outlet valve ports to the inner bottom of the bar frame, thereby achieving effective sealing of the inlet and outlet valve ports, effectively solving the defect of easy leakage of raw materials in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the utility model when viewed from above;

[0020] Figure 3 For this utility model Figure 2 A in the middle is an enlarged structural diagram;

[0021] Figure 4 This is a schematic diagram of the cross-sectional structure of the strip frame of the present utility model.

[0022] In the picture:

[0023] 100. Valve bag body;

[0024] 200, inlet and outlet valves;

[0025] 300, closing assembly; 301, bar frame; 302, lower pressure plate; 303, rotating knob; 304, bidirectional screw; 305, slider; 306, rotating frame; 307, first rotating shaft; 308, top plate; 309, second rotating shaft; 3010, limit block; 3011, limit slide groove; 3012, anti-slip protrusion. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments 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.

[0027] See also Figure 1-4 The utility model provides a technical solution: a self-closing anti-leakage valve bag, comprising:

[0028] The valve bag body 100 and the material port opened on the front of the valve bag body 100, and the inner wall of the material port is fixed with the inlet and outlet valve port 200;

[0029] The closing assembly 300 is used to compress and close the inlet and outlet valve port 200. The closing assembly 300 includes a bar frame 301 fixed on the front of the valve bag body 100 and corresponding to the inlet and outlet valve port 200, and a lower pressure plate 302 slidably set on the inner wall of the bar frame 301. The inlet and outlet valve port 200 is pressed against the inner bottom of the bar frame 301 through the lower pressure plate 302. The closing assembly 300 also includes a rotating knob 303 set on the outer surface of the bar frame 301 for driving the lower pressure plate 302 to move downward.

[0030] See Figure 3 , Figure 4 A strip groove is provided on the inner top wall of the strip frame 301, and a bidirectional screw 304 is rotatably provided on the inner wall of the strip groove. One end of the bidirectional screw 304 extends to the outer surface of the strip frame 301, and the rotating knob 303 is fixed on the end of the bidirectional screw 304.

[0031] Specifically, by providing the rotating knob 303 , the bidirectional lead screw 304 can be driven to rotate by rotating the rotating knob 303 .

[0032] See Figure 4 Two symmetrical sliders 305 are slidably provided on the inner wall of the strip groove, and the sides of the two sliders 305 are provided with threaded holes that are threadedly connected to the outer surface of the bidirectional lead screw 304.

[0033] Specifically, by providing a bidirectional lead screw 304 , the two sliders 305 can be driven to move to both sides or to the middle at the same time through the rotation of the bidirectional lead screw 304 .

[0034] See Figure 4 Two symmetrical rotating frames 306 are fixed on the upper surface of the lower pressure plate 302, and rotating grooves are opened on the lower surfaces of the two sliders 305. The inner wall of the rotating groove is fixed with a first rotating shaft 307, and a top plate 308 is rotatably set on the surface of the first rotating shaft 307.

[0035] Specifically, by providing the top plates 308 , the two top plates 308 can be driven to push the lower pressing plate 302 downwards when the two sliders 305 move to both sides at the same time, thereby driving the lower pressing plate 302 to automatically move downwards.

[0036] See Figure 4 A second rotating shaft 309 is fixed to the inner wall of the rotating frame 306, and the ends of the two top plates 308 away from the first rotating shaft 307 are rotatably connected to the surfaces of the two second rotating shafts 309 respectively. The top and bottom surfaces of the top plates 308 are respectively provided with rotating holes for the rotation of the first rotating shaft 307 and the second rotating shaft 309.

[0037] Specifically, by providing the first rotating shaft 307 and the second rotating shaft 309 , the top and bottom ends of the top plate 308 can be rotatably connected to the rotating groove and the inner wall of the rotating frame 306 respectively, thereby facilitating the pushing of the lower pressing plate 302 .

[0038] See Figure 4 , both side surfaces of the lower pressing plate 302 are fixed with limit blocks 3010, and both side inner walls of the bar frame 301 are provided with limit sliding grooves 3011 for the limit blocks 3010 to slide.

[0039] Specifically, by setting the limiting block 3010 and the limiting sliding groove 3011, the stability of the lower pressing plate 302 during the up-down movement can be effectively ensured, so that the inlet-outlet valve port 200 can be effectively pressed and closed.

[0040] Referring to Figure 4 The lower surface of the lower pressing plate 302 is uniformly provided with a plurality of anti-skid protrusions 3012 in a rectangular array, and the materials of the plurality of anti-skid protrusions 3012 are all elastic rubber.

[0041] Specifically, by setting the anti-skid protrusions 3012, the friction between the lower surface of the lower pressing plate 302 and the surface of the inlet-outlet valve port 200 can be effectively improved, thereby effectively ensuring the stability of the inlet-outlet valve port 200 when being pressed and closed.

[0042] The self-closing leak-proof material valve port bag, by setting the closing assembly 300, when the inside of the valve port bag is filled with raw materials during actual use, the bottom of the lower pressing plate 302 can effectively press and fix the inlet-outlet valve port 200 on the inner bottom of the strip-shaped frame 301, thereby effectively plugging the inlet-outlet valve port 200, and effectively solving the defect that raw materials are easily leaked in the prior art.

[0043] Working principle: during actual use, when the inside of the valve port bag is filled with raw materials, the inlet-outlet valve port 200 can be pressed flat and inserted into the inside of the strip-shaped frame 301, then the knob 303 is rotated to drive the bidirectional screw rod 304 to rotate, the rotation of the bidirectional screw rod 304 drives the two sliding blocks 305 to move to both sides at the same time, thereby driving the two top plates 308 to extrude the lower pressing plate 302 downward, driving the lower pressing plate 302 to move downward automatically, so that the bottom of the lower pressing plate 302 can effectively press and fix the inlet-outlet valve port 200 on the inner bottom of the strip-shaped frame 301, thereby effectively plugging the inlet-outlet valve port 200, and effectively solving the defect that raw materials are easily leaked in the prior art.

[0044] Meanwhile, the contents not described in detail in the specification all belong to the prior art known to those skilled in the art.

Claims

1. A self-closing anti-leakage valve bag, characterized in that: include: A valve bag body (100), and a material port opened on the front of the valve bag body (100), wherein the inner wall of the material port is provided with an inlet and outlet valve port (200); A closing assembly (300) is used to compress and close the inlet and outlet valve opening (200), the closing assembly (300) comprising a strip frame (301) fixed on the front face of the valve bag body (100) and corresponding to the inlet and outlet valve opening (200), and a lower pressure plate (302) slidably arranged on the inner wall of the strip frame (301), the inlet and outlet valve opening (200) being pressed against the inner bottom of the strip frame (301) by the lower pressure plate (302), the closing assembly (300) further comprising a rotating knob (303) arranged on the outer surface of the strip frame (301) for driving the lower pressure plate (302) to move downward.

2. The self-closing anti-leakage valve bag according to claim 1, characterized in that: A strip groove is provided on the inner top wall of the strip frame (301), and a bidirectional lead screw (304) is rotatably provided on the inner wall of the strip groove. One end of the bidirectional lead screw (304) extends to the outer surface of the strip frame (301), and the rotating knob (303) is fixed to the end of the bidirectional lead screw (304).

3. The self-closing anti-leakage valve bag according to claim 2, characterized in that: Two symmetrical sliders (305) are slidably provided on the inner wall of the strip groove, and the sides of the two sliders (305) are provided with threaded holes that are threadedly connected to the outer surface of the bidirectional lead screw (304).

4. The self-closing anti-leakage valve bag according to claim 3, characterized in that: Two symmetrical rotation frames (306) are fixedly provided on the upper surface of the lower pressure plate (302), and a rotation groove is opened on the lower surface of the two sliders (305), and a first rotation shaft (307) is fixedly provided on the inner wall of the rotation groove, and a top plate (308) is rotatably provided on the surface of the first rotation shaft (307).

5. The self-closing anti-leakage valve bag according to claim 4, characterized in that: A second rotating shaft (309) is fixedly provided on the inner wall of the rotating frame (306), and one end of the two top plates (308) away from the first rotating shaft (307) is rotatably connected to the surfaces of the two second rotating shafts (309), and the top and bottom surfaces of the top plates (308) are both provided with rotating holes for rotating the first rotating shaft (307) and the second rotating shaft (309), respectively.

6. The self-closing anti-leakage valve bag according to claim 1, characterized in that: Limit blocks (3010) are fixedly provided on both side surfaces of the lower pressing plate (302), and limit sliding grooves (3011) for the limit blocks (3010) to slide are provided on both side inner walls of the bar frame (301).

7. The self-closing anti-leakage valve bag according to claim 1, characterized in that: The lower surface of the lower pressing plate (302) is evenly provided with a plurality of anti-slip protrusions (3012) in a rectangular array, and the material of the plurality of anti-slip protrusions (3012) is elastic rubber.

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