Filling device capable of effectively guaranteeing sanitary condition

Abstract

A filling device capable of effectively guaranteeing sanitary conditions comprises a feeding body, a filling head, a piston rod and a piston rod driving piece, and is characterized in that a sealing groove and a filling opening are formed in the inner side wall of the filling head, the inner diameter of the sealing groove is gradually reduced from top to bottom, and a corrugated pipe is installed at the bottom of the piston rod; the bottom of the outer surface of the corrugated pipe is provided with a sealing curved surface tightly attached to the sealing groove. Compared with the prior art, the utility model has the beneficial effects that as the corrugated pipe is additionally arranged in the piston rod slot, and the piston rod is adopted to drive the corrugated pipe to stretch out and draw back to complete the pumping of materials, the friction between the piston rod and the piston rod slot can be effectively avoided, and the sanitary condition of filling is kept; and a gap is reserved between the telescopic corrugated pipe body of the corrugated pipe and the piston rod slot, so that friction between the corrugated pipe and the piston rod slot can be further avoided, and the service lives of the corrugated pipe and the piston rod slot are prolonged.

Description

Technical Field

[0001] The utility model relates to a filling device which can effectively ensure the hygiene condition. Background Art

[0002] For the existing filling and sealing machine, its filling structure uses a needle-type inserting tube to insert into the bag mouth for filling. After filling, the filling valve core closes the filling valve, and the material remaining at the head of the filling nozzle is eliminated from the material dripping phenomenon by the central hole of the filling valve core using the vacuum suction method. The disadvantages of this filling method are as follows: When the needle-type inserting tube inserts into the suction nozzle, it is easy to damage the inner wall of the suction nozzle. When the filling pump speed is too fast, the material will emerge from the outside of the filling inserting tube and contaminate the bag mouth. The vacuum suction method cannot stably suck various materials, easily resulting in situations such as material caking at the suction nozzle, blocking the filling head, or dripping onto the outer surface of the stand-up bag. Therefore, the products filled need to be cleaned on the surface of the stand-up bag in the subsequent process. This will cause a large amount of material waste, increased production costs, and low production efficiency and other adverse effects.

[0003] In order to solve the above technical problems, the applicant improved the existing technology and applied for a patent. The authorized announcement number of the patent is CN206900754U, and the name is "No-dripping filling mechanism for stand-up bag sauce with suction nozzle". This technology discloses a no-dripping filling mechanism for stand-up bag sauce with suction nozzle, including a support frame, a filling device, and a filling device lifting mechanism, characterized in that: the filling device lifting mechanism is installed on the support frame, the filling device includes a liftable frame, a filling head, a feed body, a piston rod, and a piston rod driving mechanism, and a positive sealed filling cavity of an inclined tube is formed in the inner cavity of the filling head. This filling mechanism is provided with a positive sealed filling cavity of an inclined tube. First, the tube is made positive and then enters the sealed filling area, ensuring filling in a sealed situation. Therefore, it can effectively achieve that the material filling does not spray out, does not drip, and the material does not cake. The air blowing cleaning mechanism blows the residual material outside the suction nozzle into the stand-up bag after filling, further ensuring that the material does not drip and does not cake, greatly reducing the material waste, greatly improving the filling accuracy, effectively keeping the outer surface of the stand-up bag clean, significantly reducing the need for manual cleaning, and effectively improving the production efficiency.

[0004] However, the applicant found that in the above technology, since the piston rod uses a traditional round shaft and is sealed with an O-ring on its circumferential surface, the circumferential surface and the piston rod slot will be worn due to continuous friction during long-term operation (the O-ring will also be worn), which not only affects the service life, but also makes it difficult to guarantee the hygiene condition of the sauce, and the filling accuracy will also continuously decline, seriously affecting normal production. Summary of the Utility Model

[0005] The object of the present utility model is to provide a filling device that can effectively ensure the sanitary condition. This filling device that can effectively ensure the sanitary condition can effectively avoid friction between the piston rod and the piston rod slot, and maintain the filling accuracy. The technical solution adopted is as follows:

[0006] A filling device that can effectively ensure the sanitary condition, including a feeding body, a filling head, a piston rod and a piston rod driving member. The feeding body is vertically arranged and a piston rod slot is opened at the lower part of the feeding body. The piston rod is inserted into the piston rod slot from top to bottom. The piston rod driving member is installed at the top end of the feeding body. The piston rod driving member is connected to the top end of the piston rod and drives the piston rod to move along the piston rod slot. A material conveying pipe is installed at the lower part of the side wall of the feeding body. It is characterized in that: the inner side wall of the filling head has a sealing groove with an inner diameter gradually decreasing from top to bottom and a filling port. A corrugated pipe is installed at the bottom of the piston rod. The bottom of the outer surface of the corrugated pipe has a sealing surface that can be closely attached to the sealing groove.

[0007] In a preferred solution, the inner cavity of the corrugated pipe includes a piston rod sleeve hole and a screw hole. Bolts are respectively used to connect the screw hole and the piston rod, so as to install the corrugated pipe to the bottom of the piston rod.

[0008] In a more preferred solution, the corrugated pipe includes a positioning step, a telescopic corrugated pipe body and an installation sealing boss connected in sequence from top to bottom. The positioning step is installed at the top end of the piston rod slot, and the installation sealing boss is installed at the bottom end of the piston rod.

[0009] In a more preferred solution, there is a gap between the telescopic corrugated pipe body of the corrugated pipe and the piston rod slot.

[0010] In a preferred solution, a filter is installed at the bottom end outlet of the feeding body. Multiple filter meshes are installed in the filter, and all the filter meshes are vertically stacked in sequence from top to bottom.

[0011] The beneficial effect of the present utility model compared with the prior art is that, since a corrugated pipe is added to the piston rod slot, the piston rod drives the corrugated pipe to expand and contract to complete the pumping of the material. Therefore, it can effectively avoid friction between the piston rod and the piston rod slot and maintain the sanitary condition of filling. And there is a gap between the telescopic corrugated pipe body of the corrugated pipe and the piston rod slot, which can further avoid friction between the corrugated pipe and the piston rod slot and extend their service life. Description of the Drawings

[0012] Figure 1 is a partial cross-sectional view of an embodiment of the present utility model;

[0013] Figure 2 is Figure 1 a partial cross-sectional view of the shown embodiment in the use state;

[0014] Figure 3 isFigure 1 Cross-sectional view of the bellows in the illustrated embodiment. Detailed implementation manners

[0015] As Figures 1-3 As shown, a filling device capable of effectively ensuring the sanitary condition in an embodiment of the present application includes a feeding body 1, a filling head 2, a piston rod 3, and a piston rod driving member. The feeding body 1 is vertically arranged, and a piston rod insertion slot 101 is formed in the lower part of the feeding body 1. The piston rod 3 is inserted into the piston rod insertion slot 101 from top to bottom. The piston rod driving member is installed at the top end of the feeding body 1, and the piston rod driving member is connected to the top end of the piston rod 3 and drives the piston rod 3 to move along the piston rod insertion slot 101. A material conveying pipe 102 is installed on the lower part of the side wall of the feeding body 1. The inner side wall of the filling head 2 has a sealing groove 201 with an inner diameter gradually decreasing from top to bottom and a filling port 202. A bellows 4 is installed at the bottom of the piston rod 3, and the bottom of the outer surface of the bellows 4 has a sealing curved surface that can be closely attached to the sealing groove 201.

[0016] As Figures 1-3 As shown, in an alternative embodiment, the inner cavity 401 of the bellows 4 includes a piston rod sleeve hole 4011 and a threaded hole 4012. Bolts (not shown) are respectively used to connect the threaded hole 4012 and the piston rod 3, so as to install the bellows 4 at the bottom of the piston rod 3.

[0017] As Figures 1-3 As shown, in an alternative embodiment, the bellows 4 includes a positioning step 402, a telescopic bellows body 403, and an installation sealing boss 404 that are sequentially connected from top to bottom. The positioning step 402 is installed at the top end of the piston rod insertion slot 101, and the installation sealing boss 404 is installed at the bottom end of the piston rod 3. That is to say, the positioning step 402 blocks the top end of the piston rod insertion slot 101, and the piston rod 3 drives the bellows 4 to expand and contract along the piston rod insertion slot 101, so as to complete the extraction and pushing of materials for filling.

[0018] As Figure 1 、 2 As shown, in an alternative embodiment, a gap is left between the telescopic bellows body 403 of the bellows 4 and the piston rod insertion slot 101. That is to say, there is no contact between the two, and no friction will occur.

[0019] As Figure 1 、 2 As shown, in an alternative embodiment, a filter 5 is installed at the bottom end outlet of the feeding body 1. A plurality of filter meshes 501 are installed in the filter 5, and all the filter meshes 501 are vertically stacked in sequence from top to bottom. The producer can select a filter 5 with different numbers of filter meshes 501 according to needs.

[0020] As Figure 1 、 2As shown, in an alternative embodiment, the number of the filter meshes 501 is five.

[0021] In an alternative embodiment, the number of the filter meshes 501 is seven.

[0022] In an alternative embodiment, the number of the filter meshes 501 is three.

[0023] In an alternative embodiment, the number of the filter meshes 501 is ten.

[0024] As Figure 1 、 2 shown, in an alternative embodiment, the piston rod driver is a cylinder 6, and the piston shaft of the cylinder 6 extends vertically downward and is connected to the top end of the piston rod 3.

[0025] As Figure 1 、 2 shown, in an alternative embodiment, the feed body 1 and the filling head 2 are integrally formed.

[0026] In an alternative embodiment, the feed body 1 and the filling head 2 are separately manufactured and connected by fasteners.

[0027] As Figure 1 、 2 shown, in an alternative embodiment, the feed body 1 is assembled by a cylinder positioning sleeve 103 and a filling sleeve 104. In this embodiment, the cylinder 6 is installed at the top end of the cylinder positioning sleeve 103, the piston shaft 601 of the cylinder 6 is connected to the top end of the piston rod 3 through a coupling 7, and the bellows 4 is installed at the lower part of the piston rod 3. The bottom of the filling sleeve 104 is the filling head 2. The inner side wall of the filling head 2 has a sealing groove 201 with an inner diameter gradually decreasing from top to bottom and a filling port 202. A filter 5 is installed at the outlet of the filling port 202, and multiple filter meshes 501 are installed in the filter 5. All the filter meshes 501 are vertically stacked in sequence from top to bottom. In order to facilitate observing the internal components, an observation window 1031 is opened on the side wall of the cylinder positioning sleeve 103.

[0028] The following Figures 1-3 introduces the working process:

[0029] In the initial state, the outer surface of the installation sealing boss 404 at the bottom of the bellows 4 is closely attached to the inner surface of the sealing groove 201.

[0030] First, the cylinder 6 drives the piston rod 3 to move upward, driving the installation sealing boss 404 of the bellows 4 to move upward and leave the inner surface of the sealing groove 201 and rise above the material conveying pipe 102, so that the sauce can be sucked from the material conveying pipe 102 into the piston rod slot 101 of the feed body 1;

[0031] Then, the air cylinder 6 drives the piston rod 3 to move downward, driving the installation and sealing boss 404 of the corrugated pipe 4 to move downward and towards the inner surface of the sealing groove 201 until it closely fits with the inner surface of the sealing groove 201. During this process, the sauce is pushed out from the bottom outlet of the piston rod slot 101 and filled into the container below through the filter 5.

[0032] Since there is no friction between the corrugated pipe 4 and the piston rod slot 101, it can effectively avoid damage between the two components due to friction, effectively extending the service life of the components.

[0033] Through experiments, the filter 5 can effectively solve the trailing phenomenon.

[0034] In addition, it should be noted that for the specific embodiments described in this specification, the names of their respective parts and the like can be different. Any equivalent or simple changes made according to the structure, features, and principles described in the inventive concept of this utility model patent are included within the protection scope of this utility model patent. Those skilled in the technical field to which this utility model belongs can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, as long as they do not deviate from the structure of this utility model or exceed the scope defined by this claim book, they should all fall within the protection scope of this utility model.

Claims

1. A filling device that can effectively ensure the sanitary condition, comprising a feeding body, a filling head, a piston rod, and a piston rod driving member. The feeding body is vertically arranged, and a piston rod slot is opened at the lower part of the feeding body. The piston rod is inserted into the piston rod slot from top to bottom. The piston rod driving member is installed at the top end of the feeding body, and the piston rod driving member is connected to the top end of the piston rod and drives the piston rod to move along the piston rod slot. A material conveying pipe is installed at the lower part of the side wall of the feeding body, and it is characterized in that: The inner side wall of the filling head has a sealing groove with an inner diameter gradually decreasing from top to bottom and a filling port. A bellows is installed at the bottom of the piston rod, and the bottom of the outer surface of the bellows has a sealing surface that can be closely attached to the sealing groove.

2. The filling device capable of effectively ensuring the hygiene condition according to claim 1, wherein: The inner cavity of the bellows includes a piston rod sleeve hole and a screw hole. Bolts are used to connect the screw hole and the piston rod respectively, so as to install the bellows at the bottom of the piston rod.

3. The filling device capable of effectively ensuring the hygiene condition as described in claim 1, characterized in that: The bellows includes a positioning step, a telescopic bellows body, and an installation sealing boss connected in sequence from top to bottom. The positioning step is installed at the top of the piston rod slot, and the installation sealing boss is installed at the bottom of the piston rod.

4. The filling device capable of effectively ensuring the hygiene condition according to claim 3, wherein: A gap is left between the telescopic bellows body of the bellows and the piston rod slot.

5. The filling device capable of effectively ensuring the hygiene condition according to any one of claims 1-4, characterized in that: A filter is installed at the bottom outlet of the feed body, and multiple filter meshes are installed in the filter. All the filter meshes are vertically stacked in sequence from top to bottom.

6. The filling device capable of effectively ensuring the hygiene condition according to any one of claims 1-4, characterized in that: The piston rod driving part is a cylinder, and the piston shaft of the cylinder extends vertically downward and is connected to the top of the piston rod.

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