Filter

Abstract

The utility model relates to a filter which is characterized in that a filter frame is arranged at the lower part of a frame, a liquid leakage hole is formed in the filter frame, a piston cylinder sleeve component is detachably arranged at the upper part of the filter frame in a pressing manner, a cylindrical piston is arranged in the filter frame in a sliding manner, and the cylindrical piston is matched with the piston cylinder sleeve component in a sliding and sealing manner; the lower end of the lead screw is used for being in jacking fit with the cylindrical piston when moving downwards, and a knob driving component is arranged on the upper portion of the lead screw. The piston cylinder sleeve assembly is detachably arranged on the upper portion of the filter frame in a pressing mode, in the using process, a filter bag containing materials is placed in the filter frame, the opening edge of the filter bag is turned outwards and pressed between the filter frame and the piston cylinder sleeve assembly, the lead screw is driven to move downwards to abut against the cylindrical piston downwards, and then the materials can be squeezed. Juice seeps out of the filter bag and flows out of the liquid leakage holes in the filter frame, after filtering is completed, the cylindrical piston is taken out, the piston cylinder sleeve assembly is disassembled, the filter bag can be taken out, cleaning is convenient, and food safety is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to a filter, especially a filter used in the food field. BACKGROUND

[0002] Some squeezing filtration work will be encountered in actual production, such as making oil residue, yogurt squeezing filtration to make dry yogurt, etc. The current pressure filter is to put the material into the filter bag, tie the opening, put it into a filter frame full of small holes, put the pressure plate, use the lead screw to add force to the pressure plate, and squeeze the filter bag to filter. This pressure filter encounters a headache problem in practical application. With the decrease of liquid in the material, the filter bag is squeezed and easily squeezed into the gap between the pressure plate and the filter frame, causing jamming, and often squeezing the filter bag, causing the material to flow out and mix into the filtered liquid. In order to solve this problem, the inventor has also designed a wax squeezing machine before, patent number: ZL 2020210154346. The device also has some shortcomings. The filter bag is designed into a filter screen that is stretched to the filter frame wall. Although it solves the problem of filter bag jamming, the filter screen fixed on the filter frame wall is not convenient to take down for cleaning, which undoubtedly brings inconvenience to the food processing industry. SUMMARY

[0003] The utility model aims at providing a filter to solve the problem of the filter screen of the pressure filtration device in the prior art not being easy to clean.

[0004] In order to solve the above problems, the filter related to the utility model adopts the following technical scheme: a filter, comprising a frame, the lower part of the frame having a filter frame, the filter frame having a liquid leakage hole, the upper part of the filter frame being detachably and tightly provided with a piston cylinder sleeve assembly, a cylindrical piston being slidably arranged in the filter frame, the cylindrical piston being in sliding sealing cooperation with the piston cylinder sleeve assembly, a lead screw being threadedly driven and arranged on the upper part of the frame, the lower end of the lead screw being used for top pressing cooperation with the cylindrical piston when moving downward, and the upper part of the lead screw having a rotary driving part.

[0005] The lower end of the lead screw is in top pressing cooperation with the cylindrical piston through a pressure plate assembly when moving downward. The pressure plate assembly comprises a bottom plate and an upper pressure plate arranged in parallel. A metal rod is fixedly arranged on the bottom plate. The lower end of the metal rod is fixed on the bottom plate, and the upper end of the metal rod is slidably arranged on the upper pressure plate. The upper end of the metal rod is provided with a anti-falling piece for top pressing the upper pressure plate. A compression spring is sleeved on the metal rod, and the two ends of the compression spring are top pressed on the bottom plate and the upper pressure plate respectively.

[0006] A pipe joint is fixedly arranged on the upper surface of the upper pressure plate for the lower end of the lead screw to extend into.

[0007] The cylindrical piston also has a liquid leakage hole.

[0008] An annular groove is arranged on the circumferential surface of the lower end of the lead screw. The mouth of the cylindrical piston is provided with a lifting lug on both sides.

[0009] The piston sleeve assembly comprises a piston sleeve body, the piston sleeve body has a sleeve, flange faces are arranged at the upper and lower ends of the sleeve, a planar flange is fixed on each of the flange faces, and rubber piston rings are respectively arranged in compression between the flange faces and the planar flanges and in sliding sealing cooperation with the cylindrical piston.

[0010] The filter frame is detachably arranged in compression with the piston sleeve assembly through the flange, and the flange is fixed with the flange face and the planar flange through a bolt assembly.

[0011] A convex pipe is convexly arranged on the upper surface of the flange, and the inner hole of the convex pipe is consistent in size with the inner hole of the flange.

[0012] A rubber flange is arranged between the upper edge of the convex pipe and the planar flange, and the rubber flange is fixed with the planar flange.

[0013] The inner hole wall of the flange face has an expanded section forming a counterbore with the inner hole of the flange face, and the rubber piston ring is arranged in the expanded section.

[0014] The piston sleeve assembly is detachably arranged in compression on the upper part of the filter frame, in use, the filter bag containing materials is placed in the filter frame, the opening of the filter bag is turned outward and pressed in compression between the filter frame and the piston sleeve assembly, the cylindrical piston is pressed downward by driving the lead screw to extrude the materials, the juice is exuded from the filter bag and flows out through the liquid leakage hole of the filter frame, after the filtration is completed, the cylindrical piston is taken out, the piston sleeve assembly is detached, and then the filter bag can be taken out, so that the filter bag is convenient to clean and food safety is ensured.

[0015] The lower end of the lead screw is in top pressing cooperation with the cylindrical piston through the pressure disc assembly when moving downward, the pressure disc assembly has a compression spring, and the compression spring can provide a buffering force, slow force is added, and the structure is prevented from being damaged. Although the compression spring stops operation after being compressed, the elastic force still exists, the bottom disc is continuously pressed, and the bottom disc is moved downward until the spring is restored to the original length and the elastic force is zero. The design effect is that intermittent operation is adopted instead of continuous operation.

[0016] The upper surface of the upper pressure disc is fixedly provided with a pipe joint for extending the lower end of the lead screw, the pipe joint is used for positioning the lead screw, the lead screw is maintained at the central position, the lead screw is prevented from being deflected when being pressed downward, movement is better, and the lead screw is also prevented from being bent and deformed.

[0017] The cylindrical piston also has a liquid leakage hole, so that the filter bag is sleeved on the outer side of the cylindrical piston, the filtrate is filtered out on the inner side, and the filter pressing efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments will be briefly described below:

[0019] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present utility model;

[0020] Figure 2 for Figure 1 A sectional view;

[0021] Figure 3 for Figure 1 A schematic diagram of the filter frame structure in the diagram;

[0022] Figure 4 for Figure 1 A three-dimensional structural diagram of the pressure plate assembly in one direction;

[0023] Figure 5 for Figure 1 A three-dimensional structural diagram of the pressure plate assembly from another direction;

[0024] Figure 6 for Figure 1 A three-dimensional structural diagram of the piston cylinder liner assembly;

[0025] Figure 7 for Figure 1 Cross-sectional view of the piston cylinder liner assembly;

[0026] Figure 8 for Figure 7 A schematic diagram of the piston cylinder liner body in the diagram;

[0027] Figure 9 This is another structural form of the cylindrical piston according to an embodiment of the present utility model;

[0028] Figure 10 This is a diagram showing how to pull out a cylindrical piston.

[0029] Figure 11 for Figure 10 A sectional view;

[0030] Figure 12 for Figure 11 A magnified view of a section at point A in the middle;

[0031] Figure 13 for Figure 11 A magnified view of the lower end of the lead screw. Detailed Implementation

[0032] In order to make the technical purpose, technical scheme and beneficial effect of the utility model clearer, the technical scheme of the utility model will be further explained below in combination with the drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model, that is, the described embodiments are only a part of the embodiments of the utility model, but not all the embodiments. The components of the utility model embodiments described and shown in the drawings herein can be arranged and designed in various different configurations.

[0033] The specific embodiments of the filter involved in the utility model, Figures 1-8 The frame has a base 1, and the two sides of the base 1 are rotatably assembled with struts 2 through hinges. The upper portions of the two struts 2 are provided with mounting beams 3, the two ends of the mounting beams 3 pass through the long holes formed in the two struts and are fixed with the struts 2. A transmission nut 4 is fixed on the mounting beam 3, and a lead screw 5 is threadedly connected with the transmission nut 4. The upper portion of the lead screw 5 is fixed with an operating rod 6 which is perpendicular to the lead screw. The lead screw 5 can be rotated through the operating rod 6.

[0034] A filter frame 7 is arranged on the base 1. The filter frame 7 is barrel-shaped with an open upper end. A liquid leakage hole 8 is formed in the filter frame 7. The liquid leakage hole is a circular hole. A piston sleeve assembly is detachably arranged on the upper portion of the filter frame 7. A flange 9 is arranged on the outer circumferential surface of the upper portion of the filter frame 7. A convex pipe 23 is protruded on the upper surface of the flange 9. The inner hole of the convex pipe 23 is the same size as the inner hole of the flange 9.

[0035] The piston sleeve assembly has a piston sleeve body. The piston sleeve body has a sleeve 10. Flange surfaces 11 are arranged on the upper and lower ends of the sleeve 10. The inner hole wall of the flange surface 11 has an expanded section 12. A rubber piston ring 13 is arranged in the expanded section 12. The expanded section is a large diameter part of the counterbore formed by the inner hole of the flange surface. A flat flange 14 is fixed on each of the two flange surfaces 11. The rubber piston ring 13 is compressed between the flange surface 11 and the flat flange 14. A rubber flange 15 is arranged between the upper edge of the convex pipe 23 and the flat flange 14. The rubber flange 15 is fixed with the flat flange 14. The flange 9, the flange surface 11 and the flat flange 14 are fixed together through bolt assemblies. The specific fixing mode is as follows: the flange surface 11 at the upper end is fixed with the flat flange 14 through a bolt assembly, the corresponding rubber piston ring 13 is compressed and fixed, the flange surface 11 at the lower end, the flat flange 14 and the rubber flange 15 are fixed together through a bolt assembly, the flange 9, the flange surface 11 and the flat flange 14 are also fixed together through a bolt assembly. The bolts of the bolt assemblies for fixing the flange 9, the flange surface 11 and the flat flange 14 pass through the through holes formed in the rubber flange 15. There is a bolt assembly for fixing the flange surface 11, the flat flange 14 and the rubber flange 15 between two adjacent bolt assemblies for fixing the flange 9, the flange surface 11 and the flat flange 14.

[0036] A cylindrical piston 16 is slidably arranged in the filter frame 7, the lower end of the cylindrical piston 16 is closed, and the upper end is open. A pressure plate assembly is arranged in the cylindrical piston 16, the pressure plate assembly has a bottom plate 17 and an upper pressure plate 18 arranged in parallel, a metal rod 19 is fixedly arranged on the bottom plate 17, the lower end of the metal rod 19 is fixed on the bottom plate 17, and the upper end penetrates the upper pressure plate 18, the upper end of the metal rod 19 is provided with an open pin 20, the open pin 20 is in abutting contact with the upper pressure plate to prevent the metal rod from being separated from the upper pressure plate, and a compression spring 21 is sleeved on the metal rod 19, and the two ends of the compression spring 21 are respectively abutted on the bottom plate 17 and the upper pressure plate 18.

[0037] A pipe nipple 22, also known as a small pipe head, is fixedly arranged on the upper surface of the upper pressure plate 18. The pipe nipple 22 is used for the lower end of the lead screw 5 to extend into, and the lead screw 5 moves downward to press the pressure plate assembly and transmit the force to the cylindrical piston to perform the pressure filtration work.

[0038] The cylindrical piston in the embodiment is cylindrical, the lower end is closed, and there is no liquid leakage hole on the upper surface. In use, the filter bag containing the material is placed in the filter frame, the mouth of the filter bag is outwardly folded and sleeved on the convex pipe of the flange, the piston cylinder sleeve assembly is tightly installed, the cylindrical piston is slidably matched with the piston cylinder sleeve assembly and is in sealing contact with the rubber piston ring, the lead screw is rotated, the lower end of the lead screw transmits the downward pressure to the cylindrical piston through the pressure plate assembly, the cylindrical piston moves downward to press the material in the filter bag, and the liquid component in the material is discharged through the filter bag, and the material residue is retained in the filter bag.

[0039] After the juicing is completed, the lead screw is rotated to withdraw upward. Since it is very laborious to pull out the cylindrical piston, the lead screw can be used, as shown in Figures 10-13 The method is as follows: an annular groove 24 is arranged on the lower end of the lead screw 5, and lug ears 25 are arranged on both sides of the mouth of the cylindrical piston 16, a cross section square cross beam 26 is inserted through the two lug ears 25, a circular hole is formed on the upper surface of the cross beam 26 for the lower end of the lead screw 5 to insert, and holes are formed on the side surface of the cross beam 26 on both sides of the circular hole, the pins 27 can be inserted into the holes, and the two pins 27 are clamped into the annular groove 24 of the lead screw 5 to realize the assembly of the lead screw 5 and the cylindrical piston. In this way, the lead screw can still be rotated, and when the lead screw is rotated to withdraw upward, the pins are subjected to upward tension, so that the cylindrical piston 16 is withdrawn, then the piston cylinder sleeve assembly is removed, the filter bag is pulled out, the filter residue is poured out, and the filter bag can be cleaned.

[0040] The cylindrical piston in the above embodiment is cylindrical, the lower end is closed, and there is no liquid leakage hole on the upper surface. In other embodiments, an upper liquid leakage hole can also be arranged, as shown in Figure 9The filter bag is filled with the material to be filtered and is placed in the filter frame. The filter bag is not filled to the brim. The filter bag is placed in the filter frame first and then the material to be filtered is filled into the filter bag. The opening of the filter bag is folded outward and is sleeved on the convex tube on the upper portion of the flange. The difference between the method of using the filter frame without the liquid leakage hole and the method of using the filter frame with the liquid leakage hole is that another empty filter bag is used. The opening of the empty filter bag is sleeved on the convex tube on the upper portion of the flange. The remaining portion of the empty filter bag is placed on the material in the filter frame. Then the other operations are the same as those of the method of using the filter frame without the liquid leakage hole. The material is surrounded by the two filter bags. When the cylindrical piston with the liquid leakage holes is pressed downward, the upper filter bag is sleeved on the outer wall of the cylindrical piston. When the cylindrical piston is pressed downward, the upper filter bag also has a filtering effect. The filtered liquid can be poured out or pumped out by the self-suction pump. Thus the filtering area is increased and the filtering speed is increased.

[0041] In the above embodiment, the lower end of the lead screw is in abutting engagement with the cylindrical piston through the pressing disc assembly when the lower end is moved downward. In other embodiments, the lead screw can be directly in abutting engagement with the cylindrical piston.

[0042] In the above embodiment, the upper surface of the upper pressing disc is fixedly provided with a pipe joint for the lower end of the lead screw to extend into. In other embodiments, the pipe joint can not be provided.

[0043] In the above embodiment, the specific structure of the piston sleeve assembly is given. In other embodiments, as long as the piston sleeve assembly can be in sliding sealing engagement with the cylindrical piston.

[0044] In the above embodiment, the annular groove is arranged on the circumferential surface of the lower end of the lead screw. The opening along the two sides of the cylindrical piston is provided with the lifting lug. The cylindrical piston can be pulled out through the lead screw. In other embodiments, the cylindrical piston can be pulled out by using the force applying device in the prior art.

[0045] In the above embodiment, the upper surface of the flange is provided with a convex tube. The inner hole of the convex tube is consistent with the size of the inner hole of the flange. The fixing of the filter bag is facilitated. In other embodiments, the opening of the filter bag can be directly pressed between the flange and the flat flange. Or the fixing shaft ring is directly arranged on the outer circumferential surface of the filter frame. The opening of the filter frame protrudes above the upper surface of the shaft ring.

[0046] In the above embodiment, the rubber flange is arranged. In other embodiments, the rubber flange can not be arranged. Because the gap is very small, the existence of the rubber flange also has the effect of increasing the friction and making the force of the filter bag uniform.

[0047] In the above embodiment, the rotary driving part is the operating rod. In other embodiments, the operating rod can be the operating disc. Or a nut is welded on the top end of the lead screw. The lead screw is rotated by using the electric wrench. The working efficiency is improved.

[0048] Finally, it should be noted that the above examples are for illustration only and do not limit the technical solutions of the present application. Any equivalent replacement, modification or partial replacement of the present application without departing from the spirit and scope of the present application shall be covered within the scope of the present application.

Claims

1. A filter, characterized by, The frame has a lower part with a filter frame having liquid leakage holes, and an upper part with a detachable and compressively arranged piston sleeve assembly.

2. The filter of claim 1, wherein, The lower end of the screw rod is used to top the cylindrical piston when moving down through a pressure plate assembly, and the pressure plate assembly includes a bottom plate and an upper pressure plate arranged in parallel.

3. The filter of claim 2, wherein, The upper surface of the upper pressure plate is fixedly provided with a pipe joint for the lower end of the screw rod to extend into.

4. The filter of claim 3, wherein, The cylindrical piston also has liquid leakage holes.

5. The filter of claim 4, wherein, The lower end of the screw rod is provided with an annular groove, and the cylindrical piston is provided with a lug along the two sides.

6. The filter according to any one of claims 1 to 5, wherein The piston sleeve assembly includes a piston sleeve body having a sleeve with flanges at the upper and lower ends, and each flange is fixed with a flat flange, and a rubber piston ring is compressively arranged between the flange and the flat flange for sliding sealing cooperation with the cylindrical piston.

7. The filter of claim 6, wherein, The filter frame is detachably and compressively arranged with the piston sleeve assembly through the flange and the flange face and the flat flange are fixed through a bolt assembly.

8. The filter of claim 7, wherein, The upper surface of the flange is convexly provided with a convex tube, and the inner hole of the convex tube is consistent with the inner hole of the flange.

9. The filter of claim 8, wherein, The upper edge of the convex tube and the flat flange are provided with a rubber flange, and the rubber flange is fixed with the flat flange.

10. The filter of claim 9, wherein, The inner hole wall of the flange face has an expanded section forming a counterbore with the inner hole of the flange face, and the rubber piston ring is in the expanded section.

Images