A working cylinder structure for the food industry

Abstract

The utility model discloses a working cylinder structure for food industry, including cylinder body, be equipped with the feed structure on cylinder body front end, and the oil cylinder flange is connected to cylinder body rear end, and the piston structure is equipped in the cylinder body, and the piston structure includes piston head and piston rod, and the sealing structure is equipped between piston head and cylinder body, and the piston rod passes through the oil cylinder flan, and the guide sleeve is equipped between the oil cylinder flange and piston rod, and the guide sleeve is connected with the oil separation structure, and the oil separation structure is placed in the cylinder body and contacts with the piston rod. The utility model adopts two sealing rings to seal food material on the piston head, sets up an oil separation structure on the guide sleeve and the oil cylinder flange end face, adds a plurality of sealing rings on one hand, adds fixed groove chamber on the other hand, and cooperates with the drainage structure to guide the oil leakage outside, reduces the mixed pollution of material and oil leakage.

Description

Technical Field

[0001] This utility model relates to the field of working cylinder technology, specifically a working cylinder structure for the food industry. Background Technology

[0002] For food-grade applications, a conventional pump body structure is used, as shown in the attached diagram. Figure 1 As shown, food-grade materials enter the food material chamber of the working cylinder and are sealed by a sealing ring on the piston head. However, after prolonged use, the sealing ring is prone to damage, leading to material leakage, which is discharged from the leakage port. The leaked material is collected by the user for reuse. However, the sealing ring inside the cylinder guide sleeve can also be damaged after prolonged use. In this case, hydraulic oil will leak from the damaged sealing ring on the guide sleeve and fall onto the inner wall of the working cylinder chamber. As the piston head reciprocates, the hydraulic oil leaking onto the inner wall of the working cylinder will contaminate the food material, rendering it unusable. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of the aforementioned background technology by providing a working cylinder structure for the food industry that offers good sealing performance, reduces material leakage and hydraulic oil leakage, and achieves physical isolation from the oil phase.

[0004] To achieve the above objectives, this utility model provides a working cylinder structure for the food industry, which adopts the following technical solution: A working cylinder structure for the food industry includes a cylinder body, a feeding structure at the front end of the cylinder body, and a hydraulic cylinder flange connected to the rear end of the cylinder body. A piston structure is provided inside the cylinder body, including a piston head and a piston rod. A sealing structure is provided between the piston head and the cylinder body. The piston rod passes through the hydraulic cylinder flange. A guide sleeve is provided between the hydraulic cylinder flange and the piston rod. An oil-separating structure is connected to the guide sleeve. The oil-separating structure is placed inside the cylinder body and contacts the piston rod.

[0005] A further improvement of the working cylinder structure for the food industry of this utility model is that a retaining ring is provided on the piston head, and a first sealing ring and a second sealing ring are respectively provided on both sides of the retaining ring. The first sealing ring, the retaining ring, and the second sealing ring all abut against the cylinder body.

[0006] A further improvement of the working cylinder structure for the food industry of this utility model is that the oil-separating structure includes a fixed plate, which is cylindrical and hollow for the piston rod to pass through. The fixed plate is connected to the guide sleeve by bolts. The inner wall of the fixed plate is provided with multiple sets of grooves, and sealing components are provided at the grooves.

[0007] A further improvement of the working cylinder structure for the food industry of this utility model is that a fixing groove is provided on the inner ring wall of the fixing plate. The fixing groove is located at the end of the fixing plate near the oil cylinder flange and is opposite to the contact point between the piston rod and the guide sleeve. An oil leakage drain pipe is also provided on the fixing plate. One end of the oil leakage drain pipe is connected to the fixing groove, and the other end extends out of the oil cylinder flange.

[0008] Compared with the prior art, the beneficial effects of this utility model are: This invention employs two sealing rings on the piston head to seal food materials; an oil-separating structure is set at the guide sleeve and the end face of the oil cylinder flange, which adds multiple sealing rings and a fixed groove chamber, and works with the drainage structure to drain the leaked oil, reducing the mixing and contamination of materials and leaked oil. Attached Figure Description

[0009] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them: Figure 1 This is a schematic diagram of the existing working cylinder. Figure 2 This is a schematic diagram of the structure of this utility model; In the diagram: 1. Cylinder body, 2. Feeding structure, 3. Cylinder flange, 4. Guide sleeve, 5. Fixing plate, 6. Bolts, 7. Groove, 8. Fixing groove, 9. Oil leakage drain pipe, 10. Material leakage port, 11. Piston head, 12. Piston rod, 13. Retaining ring, 14. First sealing ring, 15. Second sealing ring. Detailed Implementation

[0010] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0011] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0012] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views showing the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, in actual manufacturing, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0013] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0014] like Figure 2 As shown, a working cylinder structure for the food industry includes a cylinder body 1, a feeding structure 2 at the front end of the cylinder body, and a feeding port. A hydraulic cylinder flange 3 is connected to the rear end of the cylinder body. A piston structure is located inside the cylinder body, including a piston head 11 and a piston rod 12. A sealing structure is provided between the piston head and the cylinder body. The piston rod passes through the hydraulic cylinder flange, and a guide sleeve 4 is provided between the hydraulic cylinder flange and the piston rod. An oil-separating structure is connected to the guide sleeve and is located inside the cylinder body, contacting the piston rod. A material leakage port 10 is also provided on the hydraulic cylinder flange.

[0015] Specifically, a retaining ring 13 is provided on the piston head, and a first sealing ring 14 and a second sealing ring 15 are respectively provided on both sides of the retaining ring. The first sealing ring, the retaining ring, and the second sealing ring all abut against the cylinder body. The first sealing ring, the retaining ring, and the second sealing ring form a sealing structure. The setting of the two sealing rings further prevents material from leaking from the material chamber to the empty chamber side.

[0016] Specifically, the oil-separating structure includes a fixed plate 5, which is cylindrical and hollow to allow the piston rod to pass through. The fixed plate is connected to the guide sleeve by bolts 6. Multiple sets of grooves 7 are provided on the inner wall of the fixed plate, and sealing components are installed in these grooves. The sealing components can be sealing rings. There can be three sets of grooves, and correspondingly, three sealing rings can also be provided.

[0017] Furthermore, a fixing groove 8 is provided on the inner wall of the fixing plate. The fixing groove is located at the end of the fixing plate near the cylinder flange, opposite the contact point between the piston rod and the guide sleeve. An oil leakage drain pipe 9 is also provided on the fixing plate, with one end connected to the fixing groove and the other end extending out of the cylinder flange. In other words, the oil-separating structure is designed with a fixing groove to form a fixed cavity, and the oil leakage drain pipe guides the oil to the outside, reducing the possibility of oil leakage into the cylinder cavity and thus reducing the possibility of mixing with leaked materials.

[0018] The working principle of this invention is as follows: Two sealing rings are used on the piston head to seal the food material. An oil-separating structure is set at the end face of the guide sleeve and the cylinder flange. The oil-separating structure contains three oil seals and a fixed cavity. A drain pipe is led out from the fixed cavity to the outside of the cylinder flange. When the oil seal in the guide sleeve is damaged and leaks oil, the hydraulic oil will enter the fixed cavity formed by the fixed groove and be discharged through the drain pipe. At this time, the hydraulic oil will not fall into the material cavity in the cylinder. Even if the amount of leaked hydraulic oil is too large and the drain pipe cannot discharge it in time, the sealing components on the oil-separating device will prevent the hydraulic oil from leaking into the working cylinder cavity. This forms a mutual isolation between the material and the oil. That is, material leakage and oil leakage are isolated from each other and will not mix. When material leakage occurs at the leak point or hydraulic oil leakage occurs in the drain pipe, the vulnerable parts can be replaced in time to ensure the normal operation of the equipment and avoid greater damage.

[0019] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A working cylinder structure for the food industry, characterized in that, The device includes a cylinder body, a feeding structure at the front end of the cylinder body, and a hydraulic cylinder flange connected to the rear end of the cylinder body. A piston structure is provided inside the cylinder body, including a piston head and a piston rod. A sealing structure is provided between the piston head and the cylinder body. The piston rod passes through the hydraulic cylinder flange. A guide sleeve is provided between the hydraulic cylinder flange and the piston rod. An oil-separating structure is connected to the guide sleeve. The oil-separating structure is placed inside the cylinder body and contacts the piston rod.

2. The working cylinder structure for the food industry according to claim 1, characterized in that, The piston head is provided with a retaining ring, and a first sealing ring and a second sealing ring are provided on both sides of the retaining ring respectively. The first sealing ring, the retaining ring, and the second sealing ring are all pressed against the cylinder body.

3. A working cylinder structure for the food industry according to claim 2, characterized in that, The oil-separating structure includes a fixed plate, which is cylindrical and hollow to allow the piston rod to pass through. The fixed plate is connected to the guide sleeve by bolts. The inner wall of the fixed plate has multiple sets of grooves, and sealing components are provided at the grooves.

4. The working cylinder structure for the food industry according to claim 3, characterized in that, The inner wall of the fixing plate is also provided with a fixing groove, which is located at the end of the fixing plate near the oil cylinder flange. The fixing groove is opposite to the contact point between the piston rod and the guide sleeve. The fixing plate is also provided with an oil leakage drain pipe, one end of which is connected to the fixing groove and the other end extends out of the oil cylinder flange.

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