Edible oil low-temperature pressing finishing device

Abstract

The application discloses a kind of edible oil low-temperature pressing finishing device, belongs to edible oil processing technical field, including pressing jar and fixedly installed in the support leg of the outer surface of the lower end of pressing jar, the side of the pressing jar is provided with filter jar, and there is connecting bin between pressing jar and filter jar;The pressing filter piece for pressing edible oil is arranged on the pressing jar, filter jar;The pressing filter piece includes the mounting bracket installed on the upper end of pressing jar, the upper and lower ends of the pressing jar are both open, the hydraulic cylinder is fixedly installed on the mounting bracket, and the output end of hydraulic cylinder penetrates mounting bracket.The application, by several filter plates in the pressing jar, the oil material stacked in the pressing jar can be layered by several filter plates, and the oil material from top to bottom can be evenly extruded by several filter plates during the pressing process of the descending pressing plate, to improve the oil output of oil material during the pressing process, so as to improve the pressing effect and pressing efficiency.

Description

Technical Field

[0001] This invention relates to the field of edible oil processing technology, and in particular to a low-temperature pressing and refining apparatus for edible oil. Background Technology

[0002] Edible oil is an indispensable ingredient in cooking. It not only enhances the flavor of food but also provides essential fatty acids needed by the human body. It is an indispensable food ingredient and nutrient in people's lives. The processing technology for producing it mainly includes physical pressing and chemical leaching.

[0003] In existing technologies, common processing techniques for physical pressing include single-screw oil presses and hydraulic oil presses. Hydraulic oil presses primarily use a hydraulic system to squeeze the raw material to extract the oil. For example, invention patent CN106626484A discloses a rapeseed oil pressing device for edible oil processing, which includes a base plate, support plate, top plate, motor, screw conveyor, hopper, first collecting frame, slider, first support rod, filter screen, horizontal plate, bearing seat, rotating shaft, first cylinder, fixed sleeve, 7-shaped rod, and pressure plate. The support plate is vertically connected to the left side of the base plate by welding, and the top plate is horizontally connected to the support plate by welding. The rapeseed oil is filtered through the filter screen to remove rapeseed residue, thus achieving the effects of filtering rapeseed oil, improving rapeseed oil quality, preventing rapeseed oil spoilage, saving rapeseed oil, and reducing economic losses.

[0004] However, the pressing device in the above invention only uses a pressure plate and a horizontal plate to press the stacked oilseeds. During the stacking process, the oilseeds are relatively thick, which can easily lead to uneven stress during the pressing process, thus affecting the oil yield. Therefore, a low-temperature pressing and refining device for edible oil is proposed to solve the above problems. Summary of the Invention

[0005] (a) Purpose of the invention

[0006] To address the technical problems existing in the background art, the present invention proposes a low-temperature pressing and refining device for edible oil. Through the pressing tank, connecting chamber and the pressing filter on the filter tank, the oilseeds can be pressed in layers, so that each layer of oilseeds is subjected to more uniform force, and the oil can be filtered in multiple stages, which has the advantages of improving pressing effect and pressing efficiency.

[0007] (II) Technical Solution

[0008] The present invention provides a low-temperature pressing and refining device for edible oil, including a pressing tank and a support leg fixedly installed on the outer surface of the lower end of the pressing tank. A filter tank is provided on one side of the pressing tank, and a connecting chamber is connected between the pressing tank and the filter tank.

[0009] The pressing tank and the filtering tank are equipped with pressing and filtering components for pressing edible oil.

[0010] The pressing filter element includes a mounting bracket installed at the upper end of the pressing tank. The pressing tank is open at both the upper and lower ends. A hydraulic cylinder is fixedly installed on the mounting bracket, and the output end of the hydraulic cylinder passes through the mounting bracket and is fixedly connected to a pressure plate located at the opening at the upper end of the pressing tank. Several filter plates are placed in layers inside the pressing tank.

[0011] An installation ring is placed inside the filter tank, and a filter screen is fixedly installed inside the installation ring. The upper end of the filter tank is open, and a cover plate is hinged to the opening. A slag discharge pipe and an oil discharge pipe are connected in sequence on the side of the filter tank away from the pressing tank, and the oil discharge pipe is located above the slag discharge pipe. Valves are installed on both the slag discharge pipe and the oil discharge pipe.

[0012] A U-shaped bracket is fixedly connected to the connecting chamber. A threaded rod is threadedly connected to the bracket. A filter plate with one end penetrating through and extending to the inside of the connecting chamber is rotatably connected to the lower end of the threaded rod. The outer surface of the filter plate is in contact with the inner wall of the connecting chamber. A limiting rod with one end penetrating through the bracket is fixedly connected to the upper end of the filter plate.

[0013] The lower end of the pressing tank is provided with a support for the filter plate and the oil discharge.

[0014] The filter press plate consists of a pressing disc, a filter cloth, and a rubber ring. The filter cloth is sleeved on the outside of the pressing disc, and the upper surface of the filter cloth is open. The rubber ring is fixedly connected to the opening of the filter cloth. The pressing disc has several annularly distributed filter holes.

[0015] The inner top wall of the bracket is provided with a threaded hole, which is adapted to the thread on the outside of the threaded rod. The inner top wall of the bracket is provided with a round hole for the limiting rod to slide through. The inner top wall of the connecting chamber is provided with a through hole for the filter plate to extend, and a first sealing ring is embedded in the through hole.

[0016] The inner bottom wall of the filter tank is provided with several cylindrical pads for raising the mounting ring, so that the height of the lower surface of the mounting ring is higher than the center of the slag discharge pipe, and the height of the upper surface is higher than the upper surface of the liquid outlet end of the connecting chamber. A second sealing ring is embedded on the outer surface of the mounting ring.

[0017] Preferably, the support includes a support cylinder sleeved on the lower end of the pressing tank. The support cylinder is concave, and its inner bottom wall is inclined with the left side higher than the right side. Three fixing screws that penetrate the support cylinder are slidably connected to the inner wall of the support cylinder. An installation groove is provided on the inner bottom wall of the support cylinder, and a push block is slidably connected to the inner side of the installation groove. A push rod with one end penetrating the support cylinder is fixedly connected to the back of the push block. A support ring is fixedly connected to the push rod, and a return spring is fixedly connected between the support ring and the support cylinder. A telescopic rod is installed on the lower surface of the support cylinder.

[0018] Preferably, the specifications of the inner side of the support cylinder are adapted to the specifications of the outer side of the pressing tank, the inner wall of the support cylinder is provided with a sealing groove, and the specifications of the sealing groove are adapted to the specifications of the opening at the lower end of the pressing tank, and a third sealing ring is embedded in the inner side of the sealing groove.

[0019] Preferably, the outer surface of the lower end of the pressing tank is provided with a threaded groove, and the specification of the threaded groove is adapted to the thread on the outside of the fixing screw. There are three fixing screws, and the three fixing screws are distributed in a ring at equal intervals on the support cylinder.

[0020] Preferably, the front side of the support cylinder is provided with a discharge hole, and the specifications of the discharge hole are adapted to the specifications of the filter plate, so that the pressed oil and the filter plate can be discharged through the discharge hole.

[0021] Preferably, the telescopic rod consists of a sleeve rod, a sliding rod, and a connecting spring. The sliding rod is fixedly connected to the lower surface of the support cylinder, while the sleeve rod is slidably connected to the sliding rod. The connecting spring is fixedly connected between the end of the sliding rod located inside the sleeve rod and the inner side of the sleeve rod. There are three telescopic rods, and the three telescopic rods are distributed in a ring at equal intervals on the lower surface of the support cylinder.

[0022] Compared with the prior art, the above-mentioned technical solution of the present invention has the following beneficial technical effects:

[0023] 1. This low-temperature pressing and refining device for edible oil uses several filter plates inside the pressing tank to allow the oilseeds piled in the pressing tank to be layered and pressed by the descending pressure plate. During the pressing process, the oilseeds from top to bottom are evenly squeezed by the filter plates to increase the oil yield during the pressing process, thereby improving the pressing effect and pressing efficiency.

[0024] 2. This low-temperature pressing and refining device for edible oil can perform multi-stage filtration of the oil during the pressing process from top to bottom and from left to right through the filter cloth on the filter plate, the filter screen in the filter tank, and the filter plate on the connecting chamber, so as to improve the quality of the oil and further improve the pressing effect.

[0025] 3. This low-temperature pressing and refining device for edible oil allows the support cylinder to be lowered by unscrewing the fixing screw. Then, by pushing and pulling the push rod in conjunction with the push block, the filter plate and oil in the pressing tank can be removed and maintained. Rotating the threaded rod can raise the filter plate for maintenance. At the same time, opening the cover plate allows the filter screen to be lifted for maintenance, thus increasing the convenience of the entire device in the cleaning, maintenance and discharge process. Attached Figure Description

[0026] Figure 1 This is a three-dimensional view of the overall structure of the present invention.

[0027] Figure 2 This is a three-dimensional sectional view of the overall structure of the present invention.

[0028] Figure 3 This is a three-dimensional sectional view of the structure of this practical filter press plate.

[0029] Figure 4 For the present invention Figure 2 Enlarged view of point A in the middle.

[0030] Figure 5 This is a schematic diagram of the support structure of the present invention.

[0031] Reference numerals: 1. Pressing tank; 2. Support leg; 3. Connecting chamber; 4. Filter tank; 5. Pressing and filtering components; 51. Mounting frame; 52. Hydraulic cylinder; 53. Pressing plate; 54. Filter plate; 541. Pressing disc; 542. Filter hole; 543. Filter cloth; 544. Rubber ring; 55. Mounting ring; 56. Slag discharge pipe; 57. Oil discharge pipe; 58. Filter screen; 59. Cover plate; 510. Bracket; 511. Limiting rod; 512. Threaded rod; 513. Filter plate; 6. Support component; 61. Support cylinder; 62. Sealing groove; 63. Telescopic rod; 64. Fixing screw; 65. Discharge hole; 66. Mounting groove; 67. Push rod; 68. Support ring; 69. Return spring; 610. Push block. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and the accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0033] In the description of the invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] In the description of the invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, such as welding, riveting, or bonding; it can also be a detachable connection, such as threaded connection, keyed connection, or pin connection; or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; or it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0035] like Figure 1-5 As shown, the present invention proposes a low-temperature pressing and refining device for edible oil, including a pressing tank 1 and a support leg 2 fixedly installed on the outer surface of the lower end of the pressing tank 1. A filter tank 4 is provided on one side of the pressing tank 1, and a connecting chamber 3 is connected between the pressing tank 1 and the filter tank 4.

[0036] The pressing tank 1 and the filter tank 4 are equipped with pressing and filtering components 5 for pressing edible oil.

[0037] In this invention, the pressing filter element 5 on the pressing tank 1, connecting chamber 3 and filtering tank 4 can press the oilseeds in layers, making the pressure on each layer of oilseeds more uniform, and the oil can be filtered in multiple stages.

[0038] In an optional embodiment, the pressing filter element 5 includes a mounting bracket 51 installed on the upper end of the pressing tank 1. Both the upper and lower ends of the pressing tank 1 are open. A hydraulic cylinder 52 is fixedly installed on the mounting bracket 51, and the output end of the hydraulic cylinder 52 passes through the mounting bracket 51 and is fixedly connected to a pressure plate 53 located at the opening at the upper end of the pressing tank 1. Several filter plates 54 are placed in layers inside the pressing tank 1.

[0039] The lower end of the pressing tank 1 is provided with a filter plate 54 and a support 6 for oil discharge.

[0040] In this embodiment, the oilseeds piled in the pressing tank 1 are layered by several filter plates 54 inside the pressing tank 1, and are pressed by the lowered pressure plate 53. During the pressing process, the oilseeds from top to bottom are evenly squeezed by several filter plates 54 to increase the oil yield during the pressing process, thereby improving the pressing effect and pressing efficiency.

[0041] It should be noted that the filter press plate 54 consists of a pressing disc 541, a filter cloth 543, and a rubber ring 544. The filter cloth 543 is fitted on the outside of the pressing disc 541, and the upper surface of the filter cloth 543 is open. The rubber ring 544 is fixedly connected to the opening of the filter cloth 543. The pressing disc 541 has several annularly distributed filter holes 542, which allows the filter cloth 543 to be fitted on the pressing disc 541 through the rubber ring 544 to filter the layers of oil. At the same time, it also facilitates the subsequent cleaning and replacement of the filter cloth 543 by the operator.

[0042] In an optional embodiment, an installation ring 55 is placed inside the filter tank 4, and a filter screen 58 is fixedly installed inside the installation ring 55. The upper end of the filter tank 4 is open, and a cover plate 59 is hinged to the opening. The side of the filter tank 4 away from the pressing tank 1 is connected to a slag discharge pipe 56 and an oil discharge pipe 57 in sequence, and the oil discharge pipe 57 is located above the slag discharge pipe 56. Valves are installed on both the slag discharge pipe 56 and the oil discharge pipe 57.

[0043] A U-shaped bracket 510 is fixedly connected to the connecting chamber 3. A threaded rod 512 is threadedly connected to the bracket 510. A filter plate 513 with one end penetrating through and extending to the inside of the connecting chamber 3 is rotatably connected to the lower end of the threaded rod 512. The outer surface of the filter plate 513 is in contact with the inner wall of the connecting chamber 3. A limiting rod 511 with one end penetrating through the bracket 510 is fixedly connected to the upper end of the filter plate 513.

[0044] In this embodiment, the oil in the pressing process can be filtered layer by layer from top to bottom and from left to right through the filter cloth 543 on the filter plate 54, the filter screen 58 in the filter tank 4, and the filter plate 513 on the connecting chamber 3, so as to improve the quality of the oil and further improve the pressing effect.

[0045] It should be noted that the inner top wall of the bracket 510 is provided with a threaded hole, which is compatible with the thread on the outer side of the threaded rod 512. The inner top wall of the bracket 510 is provided with a round hole through which the limiting rod 511 slides, so that the rotating threaded rod 512 can drive the filter plate 513 to rise from bottom to top until the filter plate 513 extends out of the connecting chamber 3, which is convenient for the operator to maintain the filter plate 513. The inner top wall of the connecting chamber 3 is provided with a through hole for the filter plate 513 to extend, and a first sealing ring is embedded in the through hole to increase the sealing performance when the filter plate 513 fits into the through hole.

[0046] The filter tank 4 has several cylindrical pads placed on its inner bottom wall to elevate the mounting ring 55. This ensures that the lower surface of the mounting ring 55 is higher than the center of the slag discharge pipe 56, while the upper surface is higher than the upper surface of the liquid outlet of the connecting chamber 3. This allows the oil discharged from the connecting chamber 3 to be filtered by the filter screen 58 and discharged through the oil discharge pipe 57 as it flows upward into the filter tank 4. The outer surface of the mounting ring 55 is fitted with a second sealing ring, ensuring that the mounting ring 55 fits tightly against the inner wall of the filter tank 4 after it is placed inside.

[0047] In an optional embodiment, the support member 6 includes a support cylinder 61 sleeved on the lower end of the pressing tank 1. The support cylinder 61 is concave, and the inner bottom wall of the support cylinder 61 is inclined with the left side higher than the right side. Three fixing screws 64 are slidably connected to the inner wall of the support cylinder 61 and penetrate the support cylinder 61. An installation groove 66 is opened on the inner bottom wall of the support cylinder 61, and a push block 610 is slidably connected to the inner side of the installation groove 66. A push rod 67 with one end penetrating the support cylinder 61 is fixedly connected to the back of the push block 610. A support ring 68 is fixedly connected to the push rod 67, and a return spring 69 is fixedly connected between the support ring 68 and the support cylinder 61. A telescopic rod 63 is installed on the lower surface of the support cylinder 61.

[0048] In this embodiment, tightening the fixing screw 64 can fix the support cylinder 61 to the lower end of the pressing tank 1 for support and sealing, thereby supporting the oil and the filter plate 54 and guiding the pressed oil. After unscrewing the fixing screw 64, the support cylinder 61 is pressed down by the oil and the filter plate 54. Once the discharge hole 65 on the support cylinder 61 is no longer blocked by the pressing tank 1, the push rod 67 can be repeatedly pushed and pulled to drive the push block 610 to push the cake-shaped oil and the filter plate 54 located in the support cylinder 61 out along the discharge hole 65, so as to facilitate the operator to discharge the material in the pressing tank 1.

[0049] It should be noted that the specifications of the inner side of the support cylinder 61 are compatible with the specifications of the outer side of the pressing tank 1. The inner wall of the support cylinder 61 is provided with a sealing groove 62, and the specifications of the sealing groove 62 are compatible with the specifications of the opening at the lower end of the pressing tank 1. A third sealing ring is embedded in the inner side of the sealing groove 62, so that the lower end of the pressing tank 1 can extend into the sealing groove 62 and seal and fit with the support cylinder 61.

[0050] The outer surface of the lower end of the pressing tank 1 is provided with a threaded groove, and the specification of the threaded groove is compatible with the thread on the outside of the fixing screw 64. There are three fixing screws 64, and the three fixing screws 64 are distributed in a ring at equal intervals on the support cylinder 61. When the support cylinder 61 is fitted into the opening at the lower end of the pressing tank 1, the support cylinder 61 can be fixed to the lower end of the pressing tank 1 for support and sealing by tightening the fixing screws 64, so as to support the oil and the filter plate 54, and guide the pressed oil.

[0051] In addition, a discharge hole 65 is provided on the front side of the support cylinder 61, and the specifications of the discharge hole 65 are compatible with the specifications of the filter plate 54. The pressed oil and the filter plate 54 are discharged through the discharge hole 65. When the support cylinder 61 is squeezed and sinks, the discharge hole 65 is not blocked by the pressing tank 1. The pusher 610, which is repeatedly pushed, can push out the cake-shaped oil and the filter plate 54 located in the support cylinder 61 along the discharge hole 65.

[0052] Secondly, the telescopic rod 63 consists of a sleeve rod, a sliding rod, and a connecting spring. The sliding rod is fixedly connected to the lower surface of the support cylinder 61, while the sleeve rod is slidably connected to the sliding rod. The connecting spring is fixedly connected between the end of the sliding rod located inside the sleeve rod and the inner side of the sleeve rod. There are three telescopic rods 63, which are distributed in a ring at equal intervals on the lower surface of the support cylinder 61. The three telescopic rods 63 on the lower surface of the support cylinder 61 provide elastic support to the support cylinder 61, so that when the support cylinder 61 is not fixed by the fixing screw 64, it can be elastically supported and can be lowered when the support cylinder 61 is compressed.

[0053] The working principle in the above embodiments is as follows:

[0054] After the hydraulic cylinder 52 is activated to raise the pressure plate 53, the oil material to be pressed and the filter plates 54 are laid from bottom to top into the pressing tank 1. After the laying is completed, the hydraulic cylinder 52 is activated to lower the pressure plate 53 to apply pressure from top to bottom to the several layers of oil material and several filter plates 54 in the pressing tank 1. Then the valve on the oil drain pipe 57 is opened so that the several filter plates 54 can transmit the pressure to the several layers of oil material after being subjected to pressure, and squeeze the oil material evenly to increase the oil yield.

[0055] After the oil is pressed and extracted, it can be filtered from top to bottom through layers of filter cloth 543 and then flow to the inclined part of the bottom wall of the support cylinder 61. When it flows into the filter tank 4 through the connecting chamber 3, it can be filtered again by the filter plate 513 in the connecting chamber 3. At the same time, as the oil overflows upward in the filter tank 4, it can be finally filtered by the filter screen 58 and discharged through the oil discharge pipe 57. The filter residue can remain in the filter tank 4 below the filter screen 58. After the oil is pressed and discharged, the oil residue and residual oil can be discharged together by opening the valve on the slag discharge pipe 56.

[0056] When the pressed oil and filter plate 54 need to be discharged, the fixing screw 64 can be unscrewed. When the support cylinder 61 is lowered by the weight of the oil and filter plate 54 on the telescopic rod 63, the discharge hole 65 on the support cylinder 61 is not blocked by the pressing tank 1. Then, the push rod 67 is pushed and pulled repeatedly to drive the push block 610 to push the cake-shaped oil and filter plate 54 in the support cylinder 61 out along the discharge hole 65, so as to facilitate the operator to discharge the material in the pressing tank 1, so that the operator can collect the subsequent oil and remove the filter cloth 543 on the pressing plate 541 for maintenance or replacement.

[0057] When it is necessary to clean and maintain the filter screen 58 and filter plate 513, simply open the cover plate 59, remove the mounting ring 55, and rotate the threaded rod 512 to raise the filter plate 513 to perform maintenance and cleaning on the filter screen 58 and filter plate 513 respectively.

[0058] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A low-temperature pressing and refining device for edible oil, comprising a pressing tank (1) and a support leg (2) fixedly installed on the outer surface of the lower end of the pressing tank (1), characterized in that: A filter tank (4) is provided on one side of the pressing tank (1), and a connecting chamber (3) is connected between the pressing tank (1) and the filter tank (4). The pressing tank (1) and the filter tank (4) are equipped with pressing and filtering components (5) for pressing edible oil. The pressing filter element (5) includes a mounting bracket (51) installed at the upper end of the pressing tank (1). The pressing tank (1) has openings at both the upper and lower ends. A hydraulic cylinder (52) is fixedly installed on the mounting bracket (51). The output end of the hydraulic cylinder (52) passes through the mounting bracket (51) and is fixedly connected to a pressure plate (53) located at the opening at the upper end of the pressing tank (1). Several filter plates (54) are placed in layers inside the pressing tank (1). An installation ring (55) is placed inside the filter tank (4), and a filter screen (58) is fixedly installed inside the installation ring (55). The upper end of the filter tank (4) is open, and a cover plate (59) is hinged at the opening. The side of the filter tank (4) away from the pressing tank (1) is connected to a slag discharge pipe (56) and an oil discharge pipe (57) in sequence. The oil discharge pipe (57) is located above the slag discharge pipe (56), and valves are installed on both the slag discharge pipe (56) and the oil discharge pipe (57). A U-shaped bracket (510) is fixedly connected to the connecting chamber (3). A threaded rod (512) is threadedly connected to the bracket (510). A filter plate (513) with one end penetrating through and extending to the inside of the connecting chamber (3) is rotatably connected to the lower end of the threaded rod (512). The outer surface of the filter plate (513) is in contact with the inner wall of the connecting chamber (3). A limiting rod (511) with one end penetrating through the bracket (510) is fixedly connected to the upper end of the filter plate (513). The lower end of the pressing tank (1) is provided with a filter plate (54) and a support (6) for oil discharge. The filter press plate (54) is composed of a pressing disc (541), a filter cloth (543) and a rubber ring (544). The filter cloth (543) is sleeved on the outside of the pressing disc (541), and the upper surface of the filter cloth (543) is open. The rubber ring (544) is fixedly connected to the opening of the filter cloth (543). The pressing disc (541) has a number of annularly distributed filter holes (542). The inner top wall of the bracket (510) is provided with a threaded hole, and the threaded hole is adapted to the thread on the outside of the threaded rod (512). The inner top wall of the bracket (510) is provided with a round hole for the limiting rod (511) to slide through. The inner top wall of the connecting chamber (3) is provided with a through hole for the filter plate (513) to extend, and a first sealing ring is embedded in the through hole. The filter tank (4) has several cylindrical pads placed on its inner bottom wall to raise the mounting ring (55), so that the lower surface of the mounting ring (55) is higher than the center of the slag discharge pipe (56), while the upper surface is higher than the upper surface of the liquid outlet end of the connecting chamber (3). The outer surface of the mounting ring (55) is fitted with a second sealing ring.

2. The edible oil low-temperature pressing and refining apparatus according to claim 1, characterized in that, The support member (6) includes a support cylinder (61) sleeved on the lower end of the pressing tank (1). The support cylinder (61) is concave and the inner bottom wall of the support cylinder (61) is inclined with the left side higher than the right side. Three fixing screws (64) are slidably connected to the inner wall of the support cylinder (61) and penetrate the support cylinder (61). An installation groove (66) is opened on the inner bottom wall of the support cylinder (61), and a push block (610) is slidably connected to the inner side of the installation groove (66). A push rod (67) with one end penetrating the support cylinder (61) is fixedly connected to the back of the push block (610). A support ring (68) is fixedly connected to the push rod (67), and a return spring (69) is fixedly connected between the support ring (68) and the support cylinder (61). A telescopic rod (63) is installed on the lower surface of the support cylinder (61).

3. The edible oil low-temperature pressing and refining apparatus according to claim 2, characterized in that, The specifications of the inner side of the support cylinder (61) are adapted to the specifications of the outer side of the pressing tank (1). The inner wall of the support cylinder (61) is provided with a sealing groove (62), and the specifications of the sealing groove (62) are adapted to the specifications of the opening at the lower end of the pressing tank (1). A third sealing ring is embedded in the inner side of the sealing groove (62).

4. The edible oil low-temperature pressing and refining apparatus according to claim 3, characterized in that, The outer surface of the lower end of the pressing tank (1) is provided with a threaded groove, and the specification of the threaded groove is compatible with the thread on the outside of the fixing screw (64). There are three fixing screws (64), and the three fixing screws (64) are distributed in a ring at equal intervals on the support cylinder (61).

5. The edible oil low-temperature pressing and refining apparatus according to claim 4, characterized in that, The front side of the support cylinder (61) is provided with a discharge hole (65), and the specifications of the discharge hole (65) are compatible with the specifications of the filter plate (54). The pressed oil and the filter plate (54) are discharged through the discharge hole (65).

6. The edible oil low-temperature pressing and refining apparatus according to claim 5, characterized in that, The telescopic rod (63) consists of a sleeve rod, a sliding rod, and a connecting spring. The sliding rod is fixedly connected to the lower surface of the support cylinder (61), while the sleeve rod is slidably connected to the sliding rod. The connecting spring is fixedly connected between the end of the sliding rod located inside the sleeve rod and the inner side of the sleeve rod. There are three telescopic rods (63), and the three telescopic rods (63) are distributed in a ring at equal intervals on the lower surface of the support cylinder (61).

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