Adjustable pressure dewatering device

Abstract

The utility model discloses an adjustable pressure dewatering device relates to food dewatering equipment technical field, including frame component, press down subassembly, material cylinder, counter pressure regulating component and limiting component, counter pressure regulating component includes tray, movable sleeve, fixed sleeve, compression spring and lifting plate, fixed sleeve bottom end is fixedly connected with work table, and the top is inserted in movable sleeve inner chamber bottom portion and slide connection, movable sleeve top surface is fixedly connected with tray bottom, compression spring upper part is located in movable sleeve inner chamber, and lower part is located in fixed sleeve inner chamber, work table top is equipped with the height position fixed of the switch of stirring, and the switch of stirring is located tray below. The height position of the switch of stirring is fixed, and the height of tray relative to work table is constant when triggering the switch of stirring, that is, the height position of compression spring upper end is same, and when lifting plate is at different height position, compression spring lower end has different height position, and therefore, compression spring has different compression deformation, and then, compression spring has different instantaneous elasticity.

Description

Technical Field

[0001] This utility model relates to the technical field of food dehydration equipment, specifically to an adjustable pressure dehydration device. Background Technology

[0002] In the field of deep processing of fruits and vegetables (such as dehydration, quick-freezing, flour production, and ready-to-cook meals), the dehydration process is a core step affecting product quality. The dehydration process typically employs vacuum dehydration technology and pressure dehydration technology.

[0003] Vacuum dehydration offers excellent adjustability (the degree of dehydration can be adjusted by changing the vacuum level), but its single processing cycle can be as long as 12–24 hours, resulting in low processing efficiency. Traditional pressure dehydration technology uses constant mechanical pressure (typically 0.3–0.8 MPa) to compress vegetables, offering higher processing efficiency. However, because the pressure is not adjustable, it cannot be adapted to the dehydration process of different fruit / vegetable varieties (different varieties of fruits / vegetables require different pressures; too low a pressure will result in incomplete dehydration, while too high a pressure will cause cell rupture, juice loss, and nutrient loss). Summary of the Invention

[0004] In order to overcome the problem that "traditional dehydration technology cannot balance processing efficiency and adjustable performance" in the above-mentioned background technology, this utility model provides an adjustable pressure dehydration device.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is: An adjustable pressure dehydration device includes a frame assembly, a pressing assembly, a material cylinder, a back pressure adjustment assembly, and a limiting assembly. The frame assembly includes a worktable with an operating chamber above and an adjustment chamber below. The pressing assembly includes a hydraulic cylinder and a lifting pressing plate. The back pressure adjustment assembly includes a tray, a movable sleeve, a fixed sleeve, a compression spring, and a lifting plate. The bottom end of the fixed sleeve is fixedly connected to the worktable, and its top end is inserted into the bottom of the movable sleeve's inner cavity and slidably connected. The top surface of the movable sleeve is fixedly connected to the bottom surface of the tray. The upper part of the compression spring is placed in the inner cavity of the movable sleeve, and the lower part is placed in the fixed sleeve. The inner cavity; the top end of the compression spring is pressed against the bottom surface of the tray, and the bottom end is pressed against the lifting plate; the material cylinder can be placed in the operating cavity and pressed against the tray; a toggle switch with a fixed height position is provided above the worktable, and the toggle switch is located below the tray; the lower pressure plate can push the material cylinder and the tray to move downward; when the tray moves downward to trigger the toggle switch, the lower pressure plate stops moving downward; the lifting plate can be selectively fixed at different height positions in the inner cavity of the fixed sleeve by the limiting component, so that the compression spring has different elastic forces when the tray triggers the toggle switch.

[0006] As a further optimization of this utility model, a water outlet hole is provided at the bottom of the side wall of the material cylinder.

[0007] As a further optimization of this utility model, the hydraulic cylinder is arranged vertically, and the axis of the output shaft of the hydraulic cylinder is collinear with the vertical line of the bottom surface of the tray.

[0008] As a further optimization of this utility model, the compression springs are provided in a plurality of them; the plurality of compression springs are arranged in a circular array with the vertical line of the bottom surface of the tray as the center; each compression spring is fitted with a movable sleeve and a fixed sleeve on its outer periphery; the top end of each compression spring is pressed against the bottom surface of the tray; and the bottom end of each compression spring is pressed against the lifting plate.

[0009] As a further optimization of this utility model, the counter-pressure adjustment assembly further includes push rods and push plates; the number of push rods is equal to the number of lifting plates; each lifting plate corresponds to one push rod; the bottom surface of each lifting plate and the top surface of the corresponding push rod are vertically fixedly connected; the bottom end of all push rods is vertically fixedly connected to the top surface of the push plate.

[0010] As a further optimization of this utility model, the back pressure adjustment assembly also includes a ball screw pair and a wheel; the top end of the ball screw pair is vertically arranged and rotatably connected to the worktable, and the bottom end of the ball screw is vertically fixedly connected to the center position of the wheel; the push plate is provided with a receiving hole; the nut of the ball screw pair cooperates with the ball screw, and the nut is arranged in the receiving hole and fixedly connected to the push plate.

[0011] As a further optimization of this utility model, a pad is fixedly installed on the upper surface of the workbench; the toggle switch is fixedly installed on the upper surface of the pad.

[0012] As a further optimization of this utility model, the worktable is provided with a receiving through hole, and the lower surface of the pad is provided with a receiving blind hole coaxially arranged and communicating with the receiving through hole; the top end of the lead screw is provided with an optical shaft end, which is inserted into the receiving through hole and the receiving blind hole; a first bearing for limiting the optical shaft end is provided in the receiving through hole, and a first bearing for limiting the optical shaft end is provided in the receiving blind hole; a limiting ring is fixedly sleeved on the outer periphery of the optical shaft end, and the limiting ring is located at the bottom of the inner cavity of the receiving through hole; an end cap is fixedly installed on the bottom surface of the worktable, and the limiting ring is pressed against the upper surface of the end cap; the optical shaft end is inserted into the insertion hole of the end cap.

[0013] As a further optimization of this utility model, a support leg is fixedly provided below the workbench, and the support leg is located next to the wheel; the limiting component includes a lifting lug, a cable, a connecting plate, and a limiting bolt; the lifting lug is fixedly installed on the side wall of the support leg, one end of the cable is connected to the lifting lug, and the other end is connected to the connecting plate, and the outer edge of the wheel can be connected to the connecting plate through the limiting bolt.

[0014] As a further optimization of this utility model, the wheel includes an outer ring body, a cross, and several levers; the outer ring body is sleeved and fixed to the outer periphery of the cross, and the bottom end of the lead screw is vertically fixedly connected to the middle of the cross; one end of each lever is provided with a pull hole, and the other end is fixedly connected to the outer side wall of the outer ring body; several levers are arranged in a circumferential array around the lead screw; the pull plate is provided with a first positioning hole, and the stud of the limiting bolt can be inserted into the first positioning hole and the pull hole to connect the lever and the pull plate.

[0015] In summary, this utility model has at least one of the following advantages: (1) In this utility model, the height position of the toggle switch is fixed, so the height of the tray relative to the workbench is constant when the toggle switch is triggered (i.e. the height position of the upper end of the compression spring is the same); when the lifting plate is at different height positions, the lower end of the compression spring has different height positions, so the compression spring has different compression deformation, so the compression spring has different instantaneous elastic force, so the maximum pressure from the compression spring on the fruit / vegetable is different, thus realizing pressure regulation.

[0016] (2) Compared with vacuum dehydration technology, which has a single processing cycle of more than ten hours, the present invention uses hydraulic drive, and the time for the lower platen to move up and down once is ten to tens of seconds, thus having higher processing efficiency.

[0017] (3) A single push plate can simultaneously adjust the height of multiple lifting plates through multiple push rods. Then, the user only needs to use the wheel to drive the single push plate to lift and lower to adjust the bottom height of multiple compression springs. On the one hand, it can conveniently achieve the synchronization of multiple compression springs, and on the other hand, it avoids the problem of uneven load caused by uneven adjustment of multiple compression springs. It has the technical advantages of fast operation and improved product quality.

[0018] (4) The pad raises the toggle switch on the one hand, and works with the worktable to limit the top of the lead screw to prevent the top of the lead screw from shaking, thereby improving the rotational stability of the wheel.

[0019] (5) Compared to gripping the outer ring, the user can more easily apply tension / thrust to the wheel by gripping the lever, which has a more labor-saving drive form and can adapt to a compression spring with a larger drive elastic coefficient.

[0020] (6) The limiting component can be conveniently and detachably connected to the outer end of the lever. The limiting component can prevent the wheel from rotating unnecessarily, thereby preventing the height of the bottom end of the pressure spring from changing unnecessarily, so that the instantaneous elastic force of the pressure spring can be prevented from changing unnecessarily when the tray triggers the toggle switch. Attached Figure Description

[0021] The present application will be further explained below with reference to the accompanying drawings: Figure 1 This is a front view schematic diagram of the overall structure of this utility model; Figure 2 This is a front view schematic diagram of the reverse pressure regulating component; Figure 3 A front view schematic diagram of the connection structure between the fixed sleeve and the lifting plate; Figure 4 A schematic diagram illustrating the principle of adjusting the height of the bottom end of the compression spring and the instantaneous elastic force; Figure 5 This is a schematic diagram of the position of the limiting ring and the front view of the structural section. Figure 6 This is a front view schematic diagram of the rack assembly structure; Figure 7 A top view of the supporting frame and columns; Figure 8 This is a top view of the wheel structure; Figure 9 This is a front view of the vertical section of the connection structure between the lever and the pull plate. Figure 10 This is a schematic diagram of the connection structure of the hydraulic cylinder, oil pump, and oil tank.

[0022] Explanation of reference numerals in the attached figures: In the picture, 1. Frame assembly; 101. Operating chamber; 102. Adjustment chamber; 11. Workbench; 111. Pad; 1111. Toggle switch; 112. End cover; 113. First sealing ring; 12. Top support frame; 120. Rectangular notch; 121. First crossbar; 122. Second crossbar; 13. Column; 14. Support leg; 15. Bottom sealing plate; 16. Side sealing plate; 161. Doorway; 162. Door body; 2. Pressing assembly; 21. Hydraulic cylinder; 2101. Oil pressure chamber; 2102. Pneumatic pressure chamber; 2103. Piston; 22. Pressing plate; 23. Air pipe; 231. First valve body; 24. High-pressure air cylinder; 25. First oil pipe; 251. Second valve body; 26. Oil pump; 27. Second oil pipe; 28. Oil tank; 29. ​​Return oil pipe; 291. Third valve body; 3. Material cylinder; 31. Water outlet; 4. Back pressure adjustment assembly; 41. Tray; 410. Drain hose; 411. Guide rib; 42. Movable sleeve; 43. Fixed sleeve; 431. First ring body; 44. Compression spring; 45. Lifting plate; 46. Push rod; 47. Push plate; 471. Scale; 48. Ball screw pair; 481. Screw; 4811. Optical shaft end; 48111. Limit ring; 49. Wheel; 491. Outer ring body; 492. Cross; 493. Lever; 4931. Pull hole; 5. Limiting component; 51. Lifting lug; 52. Cable; 53. Connecting plate; 531. First positioning hole; 54. Limiting bolt. Detailed Implementation

[0023] Based on the above-described structural features of this application, the implementation methods of this application will be further described as follows: Reference Figures 1-2 This embodiment provides an adjustable pressure dehydration device, including a frame assembly 1, a pressing assembly 2, a material cylinder 3, a back pressure adjustment assembly 4, and a limiting assembly 5. The frame assembly 1 includes a worktable 11, which has a horizontally placed rectangular plate structure. The worktable 11 has an operating chamber 101 above it and an adjustment chamber 102 below it.

[0024] Reference Figures 1-2 The pressing assembly 2 includes a hydraulic cylinder 21 and a lifting pressing plate 22. The hydraulic cylinder 21 is vertically positioned, and its output shaft is vertically and fixedly connected to the pressing plate 22 (e.g., by bolts). The hydraulic cylinder 21 drives the pressing plate 22 to move up and down. The housing height of the hydraulic cylinder 21 is fixed, and the pressing plate 22 is positioned below the hydraulic cylinder 21 and can move up and down. When the pressing plate 22 moves downward, it squeezes the fruit / vegetables below to dehydrate them; when the pressing plate 22 moves upward, it returns to its original position.

[0025] Reference Figures 1-2The back pressure adjustment assembly 4 includes a tray 41, a movable sleeve 42, a fixed sleeve 43, a compression spring 44, and a lifting plate 45. Both the movable sleeve 42 and the fixed sleeve 43 are vertically arranged; the bottom end of the fixed sleeve 43 is vertically fixedly connected to the worktable 11 (e.g., by bolts), and its top end is inserted into the bottom of the inner cavity of the movable sleeve 42 and slidably connected; the top surface of the movable sleeve 42 is fixedly connected to the bottom surface of the tray 41 (e.g., by bolts); the upper part of the compression spring 44 is placed inside the inner cavity of the movable sleeve 42, and the lower part is placed inside the inner cavity of the fixed sleeve 43; the top end of the compression spring 44 is pressed against the bottom surface of the tray 41, and the bottom end is pressed against the lifting plate 45. The fixed sleeve 43 is used to limit the lower part of the compression spring 44 to prevent the compression spring 44 from coming out; the movable sleeve 42 limits the upper part of the compression spring 44 on the one hand, and prevents external impurities (such as dust, fruit / vegetable scraps, etc.) from entering the inner cavity of the movable sleeve 42 / fixed sleeve 43 on the other hand, thereby preventing the compression spring 44 and the lifting plate 45 from being jammed by external impurities.

[0026] Reference Figure 2 The sum of the lengths of the movable sleeve 42 and the fixed sleeve 43 is greater than the length of the compression spring 44 in its uncompressed state. That is, when the compression deformation of the compression spring 44 is 0, there will be no gap between the movable sleeve 42 and the fixed sleeve 43. This prevents external impurities from entering and also prevents the insertion of the movable sleeve 42 and the fixed sleeve 43 from failing (this problem will cause the guiding effect between the movable sleeve 42 and the fixed sleeve 43 to fail).

[0027] Reference Figures 1-2 The tray 41 is located inside the operating chamber 101, allowing the user to place the material cylinder 3 inside the operating chamber 101 and press it onto the tray 41. When the lower pressure plate 22 is at the top dead center, the height H of the gap between the bottom surface of the lower pressure plate 22 and the top surface of the tray 41 is greater than the height of the material cylinder 3. Therefore, the user can place the material cylinder 3 into the tray 41 or remove it from the tray 41 through this gap.

[0028] Reference Figures 1-2 The bottom side wall of the material cylinder 3 has several water outlet holes 31. When the fruits / vegetables placed inside the material cylinder 3 are squeezed by the lower pressure plate 22, the water inside the fruits / vegetables is squeezed out, forming extruded liquid. The extruded liquid flows out of the material cylinder 3 through the water outlet holes 31 and flows into the tray 41. When the bottom surface of the material cylinder 3 is pressed against the bottom surface of the inner cavity of the tray 41, the water outlet holes 31 are placed inside the inner cavity of the tray 41 (i.e., the height of the water outlet holes 31 is lower than the height of the upper edge of the side wall of the tray 41). Then, the extruded liquid discharged from the water outlet holes 31 impacts the side wall of the inner cavity of the tray 41, avoiding the problem of extruded liquid splashing everywhere.

[0029] Reference Figures 1-2The bottom side wall of the tray 41 is fixedly connected to one end of the drain hose 410 and communicates with it (e.g., through a straight connector and a sealing ring to achieve a sealed and fixed connection). The other end of the drain hose 410 is connected to a wastewater tank, the height of which is lower than the height of the tray 41. The wastewater tank is placed on the floor of the processing workshop, and its top surface has a wastewater outlet to accommodate the drain hose 410.

[0030] Reference Figure 2 A toggle switch 1111 with a fixed height is provided above the workbench 11, located below the tray 41. The trigger rod of the toggle switch 1111 is inclined and can rotate under pressure, with a return torsion spring at the hinged end of the trigger rod. The lower pressure plate 22 can push the material cylinder 3 and the tray 41 downward. When the tray 41 moves downward to a specific height, the bottom surface of the tray 41 pushes the trigger rod to rotate, thereby monitoring the position of the tray 41. When the tray 41 moves downward to trigger the toggle switch 1111, the lower pressure plate 22 stops moving downward; then the lower pressure plate 22 moves upward to reset, gradually relieving the pressure on the fruit / vegetables. Therefore, when the tray 41 triggers the toggle switch 1111, the pressure on the fruit / vegetables is the maximum pressure (in this dehydration process); the present invention aims to adjust this maximum pressure to control the degree of dehydration of the fruit / vegetables.

[0031] Reference Figures 3-4 The lifting plate 45 can be selectively fixed at different height positions within the cavity of the fixed sleeve 43 by the limiting component 5, so that when the tray 41 triggers the toggle switch 1111, the compression spring 44 has different elastic forces. Since the height position of the toggle switch 1111 is fixed, the height of the tray 41 relative to the worktable 11 is the same when the tray 41 triggers the toggle switch 1111 (regardless of the height of the lifting plate 45), that is, the height position of the upper end of the compression spring 44 is the same; while when the lifting plate 45 is at different height positions (i.e., h1≠h2), the lower end of the compression spring 44 has different height positions, so the compression spring 44 has different compression deformation, and thus the compression spring 44 has different instantaneous elastic forces, thereby realizing the adjustment of the maximum pressure during the dehydration process.

[0032] Reference Figure 1 and Figure 2 The hydraulic cylinder 21 is vertically positioned, and the axis of its output shaft is collinear with the perpendicular bisector of the bottom surface of the tray 41. Several compression springs 44 are provided, arranged in a circular array around the perpendicular bisector of the bottom surface of the tray 41. This array ensures that all compression springs 44 maintain the same elastic force, improving the uniformity of the counterforce and reducing eccentric loading. Each compression spring 44 has a movable sleeve 42 and a fixed sleeve 43 fitted around its outer periphery. The top end of each compression spring 44 is pressed against the bottom surface of the tray 41, and the bottom end of each compression spring 44 is pressed against the lifting plate 45.

[0033] Reference Figure 2 The counter-pressure adjustment assembly 4 also includes vertically positioned push rods 46 and horizontally positioned push plates 47; the number of push rods 46 is equal to the number of lifting plates 45; each lifting plate 45 corresponds to one push rod 46; the bottom surface of the lifting plate 45 and the top surface of the corresponding push rod 46 are vertically and fixedly connected (e.g., by bolts); the bottom end of all push rods 46 is vertically and fixedly connected (e.g., by bolts) to the top surface of the push plate 47. The function of the push rods 46 and the push plates 47 is to keep the different lifting plates 45 moving synchronously (at the same time, at the same speed, and in the same direction), so as to keep all compression springs 44 with the same elastic force, improve the uniformity of counter-pressure, and reduce off-center load.

[0034] Reference Figure 3 The bottom of the inner cavity of the fixed sleeve 43 is equipped with a first ring body 431 (for example, it can be detachably connected by bolts, so as to facilitate the assembly and maintenance of the present invention), and the push rod 46 is inserted into the first ring body 431 and can slide longitudinally.

[0035] Reference Figure 2 and Figure 4 A vertical scale 471 is provided on the side of the push plate 47, and the top of the scale 471 is vertically and fixedly connected to the bottom surface of the workbench 11. When the height of the push plate 47 changes, it can be aligned with different scale lines on the scale 471. Before the pressure dehydration operation, the user can evaluate the different height positions of the lifting plate 45 (i.e., the different height positions of the push plate 47) corresponding to the most suitable pressure required for different varieties of fruits / vegetables through a limited number of experiments. At this time, the user needs to record the scale line corresponding to the push plate 47. Therefore, in the formal dehydration operation, the user only needs to rotate the wheel 49 until the push plate 47 is aligned with the corresponding scale line to adapt to the pressure dehydration of the corresponding fruits / vegetables.

[0036] If there are at least four compression springs 44, then there are at least four corresponding movable sleeves 42, fixed sleeves 43, lifting plates 45, and push rods 46.

[0037] Reference Figure 2The back pressure adjustment assembly 4 also includes a ball screw pair 48 and a wheel 49. The top end of the lead screw 481 of the ball screw pair 48 is vertically arranged and rotatably connected to the worktable 11, and the bottom end of the lead screw 481 is vertically fixedly connected to the center position of the wheel 49 (e.g., by bolts). The push plate 47 is provided with a receiving hole. The nut of the ball screw pair 48 cooperates with the lead screw 481, and the nut is set in the receiving hole and fixedly connected to the push plate 47 (e.g., by bolts). When the user rotates the wheel 49, the push plate 47, push rod 46 and lifting plate 45 can be driven to move up and down synchronously by the ball screw pair 48 to simultaneously adjust the height position of the bottom ends of multiple compression springs 44. When the push plate 47 reaches the desired position (i.e., when the push plate 47 is aligned with the corresponding scale line), the user uses the limiting assembly 5 to limit the wheel 49, thereby preventing the wheel 49 from rotating and thus preventing the push plate 47 from moving unnecessarily.

[0038] Reference Figure 1 and Figure 2 A pad 111 is fixedly mounted on the upper surface of the workbench 11; the bottom of the housing of the toggle switch 1111 is fixedly mounted on the upper surface of the pad 111 (e.g., by bolt connection), thereby fixing the height of the toggle switch 1111. The pad 111 is provided with a clearance through hole for fitting and accommodating the fixed sleeve 43.

[0039] Reference Figure 2 and Figure 5 The worktable 11 is provided with a receiving through hole, and the lower surface of the pad 111 is provided with a receiving blind hole coaxially arranged and connected with the receiving through hole; the top end of the lead screw 481 is provided with a light shaft end 4811 (for example, by an integral fixed connection or by a bolt fixed connection), the light shaft end 4811 is cylindrical, and the light shaft end 4811 is inserted into the receiving through hole and the receiving blind hole; a first bearing for limiting the light shaft end 4811 is provided in the receiving through hole, and a first bearing for limiting the light shaft end 4811 is provided in the receiving blind hole, and the first bearing is adapted to be installed on the outer side wall of the light shaft end 4811. A limiting ring 48111 is fixedly fitted around the outer periphery of the optical axis end 4811 (e.g., by bolt fixing or by an integral fixing connection), and the limiting ring 48111 is located at the bottom of the cavity of the receiving through hole; an end cover 112 is fixedly installed on the bottom surface of the worktable 11 (e.g., by bolt fixing), and the limiting ring 48111 is pressed against the upper surface of the end cover 112, thereby preventing the optical axis end 4811 and the limiting ring 48111 from coming out of the receiving through hole and the receiving blind hole; the optical axis end 4811 is inserted into the insertion hole of the end cover 112.

[0040] Reference Figure 5A first sealing ring 113 is clamped and fixed between the pad 111 and the worktable 11. The first sealing ring 113 is sleeved on the outer periphery of the receiving blind hole and the receiving through hole to slow down the evaporation rate of the lubricating oil in the first bearing (the lubricating oil will slowly leak through the gap between the pad 111 and the worktable 11), thereby improving the service life of the present invention.

[0041] Reference Figure 6 and Figure 7 A support frame 12 and a column 13 are provided above the workbench 11. The top and bottom ends of the column 13 are fixedly connected to the support frame 12 and the workbench 11, respectively. The hydraulic cylinder 21 is fixedly connected to the support frame 12 in a cross shape. The support frame 12 is arranged horizontally; the bottom end of the column 13 is fixedly connected vertically to the top surface of the workbench 11 (e.g., by bolts); the top end of the column 13 is fixedly connected vertically to the support frame 12 (e.g., by bolts). The column 13 is made of square tubing, which has higher stability and thus prevents tipping; a diagonal brace is provided on the side of the bottom end of the column 13. The top end of the diagonal brace is fixedly connected to the side wall of the column 13 (e.g., by welding), and the bottom end is fixedly connected to the workbench 11 (e.g., by welding), thereby further enhancing the structural stability of the column 13.

[0042] Reference Figure 6 and Figure 7 The top support frame 12 includes two first horizontal bars 121 and several second horizontal bars 122; the two first horizontal bars 121 are arranged parallel to each other, and the second horizontal bars 122 are arranged between the two first horizontal bars 121. The two ends of the second horizontal bars 122 are respectively vertically fixedly connected to the two first horizontal bars 121 (e.g., by bolts). Since the two first horizontal bars 121 are arranged with one long and one short, the top support frame 12 is arranged in a U-shape and forms rectangular notches 120 at both ends. The top of the column 13 is fitted into the rectangular notch 120 and fixedly connected to the first horizontal bars 121 and the second horizontal bars 122 (e.g., by bolts or by welding). The outer shell of the hydraulic cylinder 21 is fixedly connected to the side wall of the first horizontal bar 121 (e.g., by bolts).

[0043] Reference Figure 6 , Figure 8 and Figure 9Four support legs 14 are fixedly installed below the worktable 11 (e.g., vertically fixed by bolts). These support legs 14 are located at four right-angle positions on the bottom surface of the worktable 11. The support legs 14 are positioned beside the wheel 49. The limiting assembly 5 includes a lifting lug 51, a cable 52, a connecting plate 53, and a limiting bolt 54. The lifting lug 51 is fixedly installed on the side wall of the support leg 14 (e.g., fixed by bolts or welding). One end of the cable 52 is connected to the lifting lug 51, and the other end is connected to the connecting plate 53. The outer edge of the wheel 49 can be detachably connected to the connecting plate 53 via the limiting bolt 54. The cable 52 applies tension to the outer edge of the wheel 49, thereby preventing the wheel 49 from rotating, thus locking the ball screw assembly 48, and consequently locking the height position of the lifting plate 45.

[0044] Reference Figure 6 , Figure 8 and Figure 9 The wheel 49 includes an outer ring 491, a cross 492, and several levers 493. The outer ring 491 is fitted and fixed around the outer periphery of the cross 492, and the outer end of the cross 492 is fixedly connected to the outer ring 491 (e.g., by bolts or by welding). The center of the cross 492 is located at the center of the outer ring 491, so that the wheel 49 can rotate evenly. The bottom end of the lead screw 481 is fixedly connected vertically to the middle of the cross 492 (e.g., by bolts). One end of the lever 493 is provided with a pull hole 4931, and the other end is fixedly connected to the outer side wall of the outer ring 491 (e.g., by bolts). Several levers 493 are arranged in a circumferential array around the lead screw 481. The pull plate 53 is provided with a first positioning hole 531, and the stud of the limiting bolt 54 can be inserted into the first positioning hole 531 and the pull hole 4931 to connect the levers 493 and the pull plate 53.

[0045] Reference Figure 6 , Figure 8 and Figure 9 The user can apply torque to the wheel 49 more conveniently and effortlessly by grabbing the lever 493 and pulling / pushing it. (The user's palm can directly apply pressure / pull to the lever 493; however, if the user's palm grabs the outer ring 491, the grip force must be converted into friction to apply torque to the wheel 49. This method has significant drawbacks. On the one hand, the palm is prone to slipping between the palm and the outer ring 491, and on the other hand, several times the grip force is required to drive it. This also makes it difficult to adjust the compression spring 44, which has a large elastic coefficient.)

[0046] Reference Figure 6 , Figure 8 and Figure 9The user attaches the pull plate 53 to the lever 493, aligning the first positioning hole 531 with the pull hole 4931 (at this time, the cable 52 is taut, which can limit the movement of the wheel 49). Then, the stud of the limiting bolt 54 is inserted into the first positioning hole 531 and the pull hole 4931, and finally the nut of the limiting bolt 54 is tightened to complete the fixed connection between the pull plate 53 and the lever 493. The user can then easily rotate the wheel 49 by removing the limiting bolt 54.

[0047] Reference Figure 6 and Figure 8 A bottom sealing plate 15 is provided below the worktable 11. A side sealing plate 16 is provided between two adjacent support legs 14. The top edge of the side sealing plate 16 is sealed and fixedly connected to the bottom surface of the worktable 11 (e.g., by welding), the side edge is sealed and fixedly connected to the side wall of the support leg 14 (e.g., by welding), and the bottom edge is sealed and fixedly connected to the outer edge of the bottom sealing plate 15 (e.g., by welding). The worktable 11, the side sealing plate 16, and the bottom sealing plate 15 form a relatively sealed adjustment cavity 102, thereby isolating the ball screw assembly 48 from external impurities and thus avoiding the problem of the ball screw assembly 48 being jammed by external impurities.

[0048] Reference Figure 6 and Figure 8 A doorway 161 is provided in the middle of the side sealing plate 16 near the lifting lug 51. Inside the doorway 161 is a door 162 that can be opened and closed (one edge of the door 162 is connected to the doorway 161 of the side sealing plate 16 by a hinge, and the other edge of the door 162 is detachably connected to the side sealing plate 16 by a spring latch). When the user opens the door 162, he / she can reach into the adjustment cavity 102 and operate the wheel 49 and the limit assembly 5; when the user closes the door 162, it can prevent external impurities from entering the adjustment cavity 102, thereby protecting the ball screw assembly 48.

[0049] Reference Figure 10The pneumatic chamber 2102 of the hydraulic cylinder 21 is connected to the high-pressure gas cylinder 24 via the air pipe 23. A first valve body 231 is installed in the middle of the air pipe 23. The high-pressure gas cylinder 24 stores inert gas (such as helium, neon, argon, krypton, etc., with a pressure not less than 2.5 standard atmospheres). The hydraulic chamber 2101 of the hydraulic cylinder 21 is connected to the oil pump 26 via the first oil pipe 25. A second valve body 251 is installed in the middle of the first oil pipe 25. The oil pump 26 is connected to the oil tank 28 via the second oil pipe 27. The oil tank 28 stores hydraulic oil. The hydraulic chamber 2101 of the hydraulic cylinder 21 is connected to the oil tank 28 via the return oil pipe 29. A third valve body 291 is installed in the middle of the return oil pipe 29. When the hydraulic cylinder starts, it can pressurize the hydraulic oil in the oil tank 28 into the hydraulic pressure chamber 2101, which can drive the piston 2103 in the hydraulic cylinder 21 to move, thereby driving the output shaft of the hydraulic cylinder 21 to extend. When the oil pump 26 stops running, the inert gas in the high-pressure gas cylinder 24 expands and is pressed into the gas pressure chamber 2102, thereby pushing the piston 2103 to return, that is, realizing the retraction of the output shaft of the hydraulic cylinder 21. The first valve body 231, the second valve body 251 and the third valve body 291 are all solenoid valves; when the first valve body 231, the second valve body 251 or the third valve body 291 is open (that is, the first valve body 231, the second valve body 251 or the third valve body 291 is de-energized), fluid (such as hydraulic oil, inert gas) is allowed to pass through. When the first valve body 231, the second valve body 251, or the third valve body 291 is closed (i.e., when power is supplied to the first valve body 231, the second valve body 251, or the third valve body 291), fluids (such as hydraulic oil or inert gas) are prohibited from passing through. The oil tank 28, the oil pump 26, and the high-pressure gas cylinder 24 are all placed on the floor of the processing workshop.

[0050] This utility model also includes an electrical cabinet, which is placed on the floor of the processing workshop. The oil pump 26, the first valve body 231, the second valve body 251, the third valve body 291, and the toggle switch 1111 are respectively connected to the electrical cabinet via wires and signal lines; the electrical cabinet is connected to an external power supply and an external controller (such as a computer or a PLC programmable logic controller) via wires and signal lines, and the external controller controls the start-stop and other working states of the oil pump 26, the first valve body 231, the second valve body 251, the third valve body 291, and the toggle switch 1111 through the electrical cabinet.

[0051] Operating steps: ① Open the door 162, remove the limit bolt 54, and separate the pull plate 53 from the lever 493; ② The user selects a single type of fruit / vegetable and places it into the feed cylinder 3, then inserts the feed cylinder 3 into the operating chamber 101 and places it on the tray 41; ③ Select the appropriate scale according to the type of fruit / vegetable being processed; then rotate the wheel 49 until the push plate 47 aligns with the target scale line on the scale 471; then use the limit bolt 54 to connect the pull plate 53 to the lever 493; ④ Operate the external controller (e.g., activate the start switch on the external controller) to open the first valve body 231 and the second valve body 251, and close the third valve body 291. Then, the oil pump 26 starts and presses the hydraulic oil in the oil tank 28 into the hydraulic chamber 2101, causing the lower pressure plate 22 to extend into the material cylinder 3 and squeeze the fruit / vegetable downwards. When the toggle switch 1111 is triggered, the oil pump 26 is de-energized, and the inert gas pushes the lower pressure plate 22 to move upwards to reset (the hydraulic oil in the hydraulic chamber 2101 can slowly flow back into the oil tank 28 through the oil pump 26; at this time, the user can open the third valve body 291, and the hydraulic oil in the hydraulic chamber 2101 can simultaneously flow back to the oil tank 28 quickly through the return oil pipe 29 to achieve rapid drive); ⑤ When the lower pressure plate 22 moves upwards to the top dead center, the user manually removes the material cylinder 3 from the operating chamber 101.

[0052] Reference Figure 2 Several guide ribs 411 are provided at the outer edge of the inner cavity of the tray 41. The side wall of the tray 41 is cylindrical, and the guide ribs 411 are arranged in a circumferential array on the inner side wall of the tray 41. The guide ribs 411 are upright and in the shape of a right-angled trapezoid. The inclined edge of the guide ribs 411 is used to guide the material cylinder 3 when it is inserted. The guide ribs 411 are used to limit the material cylinder 3 to the center position of the tray 41, so that the material cylinder 3 is exactly below the lower pressure plate 22, and the lower pressure plate 22 can be inserted into the inner cavity of the material cylinder 3 when it moves downward. A flow guiding gap is provided between two adjacent guide ribs 411, and the end of the drain hose 410 is connected to any flow guiding gap, thereby avoiding the problem of the guide ribs 411 blocking the opening of the end of the drain hose 410.

[0053] In this invention, the height position of the toggle switch 1111 is fixed, so when the toggle switch 1111 is triggered, the height of the tray 41 relative to the worktable 11 is constant, that is, the height position of the upper end of the compression spring 44 is the same; however, when the lifting plate 45 is at different height positions, the lower end of the compression spring 44 has different height positions, so the compression spring 44 has different compression deformation, and thus the compression spring 44 has different instantaneous elastic force. Therefore, the maximum pressure on the fruit / vegetable from the compression spring 44 is different, thus achieving pressure regulation.

[0054] In the description of this utility model, it should be noted that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and 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 this utility model.

[0055] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or a connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0056] In summary, for those skilled in the art, any changes, modifications, substitutions, or variations made to this utility model based on its guidance, without departing from its principles and spirit, shall still fall within the protection scope of this utility model.

Claims

1. An adjustable pressure dehydration device, characterized in that: It includes a frame assembly (1), a pressing assembly (2), a barrel (3), a back pressure adjustment assembly (4), and a limit assembly (5); The frame assembly (1) includes a workbench (11), with an operating cavity (101) above the workbench (11) and an adjustment cavity (102) below the workbench (11). The pressing assembly (2) includes a hydraulic cylinder (21) and a pressing plate (22) that can be raised and lowered. The back pressure adjustment assembly (4) includes a tray (41), a movable sleeve (42), a fixed sleeve (43), a compression spring (44), and a lifting plate (45); the bottom end of the fixed sleeve (43) is fixedly connected to the worktable (11), and the top end is inserted into the bottom of the inner cavity of the movable sleeve (42) and slidably connected; the top surface of the movable sleeve (42) is fixedly connected to the bottom surface of the tray (41); the upper part of the compression spring (44) is placed in the inner cavity of the movable sleeve (42), and the lower part is placed in the inner cavity of the fixed sleeve (43); the top end of the compression spring (44) is pressed against the bottom surface of the tray (41), and the bottom end is pressed against the lifting plate (45); The material cylinder (3) can be placed inside the operating cavity (101) and pressed against the tray (41); A toggle switch (1111) with a fixed height is provided above the workbench (11), and the toggle switch (1111) is located below the tray (41); The lower pressure plate (22) can push the material cylinder (3) and the tray (41) downward; when the tray (41) moves downward to trigger the toggle switch (1111), the lower pressure plate (22) stops moving downward; The lifting plate (45) can be selectively fixed by the limiting component (5) at different height positions inside the fixed sleeve (43) so that when the tray (41) triggers the toggle switch (1111), the compression spring (44) has different elastic forces.

2. The adjustable pressure dehydration device according to claim 1, characterized in that: The bottom of the side wall of the material cylinder (3) is provided with a water outlet (31).

3. The adjustable pressure dehydration device according to claim 2, characterized in that: The hydraulic cylinder (21) is vertically arranged, and the axis of the output shaft of the hydraulic cylinder (21) is collinear with the vertical line of the bottom surface of the tray (41).

4. The adjustable pressure dehydration device according to claim 3, characterized in that: The compression springs (44) are provided in a plurality of them; the plurality of compression springs (44) are arranged in a circular array with the vertical line of the bottom surface of the tray (41) as the center; each compression spring (44) is fitted with a movable sleeve (42) and a fixed sleeve (43) on its outer periphery; the top of each compression spring (44) is pressed against the bottom surface of the tray (41); the bottom of each compression spring (44) is pressed against the lifting plate (45).

5. The adjustable pressure dehydration device according to claim 4, characterized in that: The back pressure adjustment assembly (4) further includes push rods (46) and push plates (47); the number of push rods (46) is equal to the number of lifting plates (45); the lifting plates (45) correspond one-to-one with the push rods (46); the bottom surface of the lifting plate (45) and the top surface of the corresponding push rod (46) are vertically fixedly connected; the bottom end of all the push rods (46) is vertically fixedly connected to the top surface of the push plate (47).

6. The adjustable pressure dehydration device according to claim 5, characterized in that: The back pressure adjustment assembly (4) further includes a ball screw pair (48) and a wheel (49); the top end of the screw (481) of the ball screw pair (48) is vertically arranged and rotatably connected to the worktable (11), and the bottom end of the screw (481) is vertically fixedly connected to the center position of the wheel (49); the push plate (47) is provided with a receiving hole; the nut of the ball screw pair (48) cooperates with the screw (481), and the nut is set in the receiving hole and fixedly connected to the push plate (47).

7. The adjustable pressure dehydration device according to claim 6, characterized in that: A pad (111) is fixedly installed on the upper surface of the workbench (11); the toggle switch (1111) is fixedly installed on the upper surface of the pad (111).

8. The adjustable pressure dehydration device according to claim 7, characterized in that: The worktable (11) is provided with a receiving through hole, and the lower surface of the pad (111) is provided with a receiving blind hole coaxially arranged and connected with the receiving through hole; the top end of the lead screw (481) is provided with an optical shaft end (4811), and the optical shaft end (4811) is inserted into the receiving through hole and the receiving blind hole; the receiving through hole is provided with a first bearing for limiting the optical shaft end (4811), and the receiving blind hole is provided with a first bearing for limiting the optical shaft end (4811); a limiting ring (48111) is fixedly sleeved on the outer periphery of the optical shaft end (4811), and the limiting ring (48111) is located at the bottom of the cavity of the receiving through hole; an end cap (112) is fixedly installed on the bottom surface of the worktable (11), and the limiting ring (48111) is pressed against the upper surface of the end cap (112); the optical shaft end (4811) is inserted into the insertion hole of the end cap (112).

9. The adjustable pressure dehydration device according to claim 8, characterized in that: A support leg (14) is fixedly installed below the workbench (11), and the support leg (14) is located on the side of the wheel (49); the limiting component (5) includes a lifting lug (51), a cable (52), a connecting plate (53), and a limiting bolt (54); the lifting lug (51) is fixedly installed on the side wall of the support leg (14), one end of the cable (52) is connected to the lifting lug (51), and the other end is connected to the connecting plate (53), and the outer edge of the wheel (49) can be connected to the connecting plate (53) through the limiting bolt (54).

10. The adjustable pressure dehydration device according to claim 9, characterized in that: The wheel (49) includes an outer ring (491), a cross (492), and several levers (493); the outer ring (491) is sleeved and fixed on the outer periphery of the cross (492), and the bottom end of the lead screw (481) is vertically fixedly connected to the middle of the cross (492); one end of the lever (493) is provided with a pull hole (4931), and the other end is fixedly connected to the outer side wall of the outer ring (491); several levers (493) are arranged in a circular array with the lead screw (481) as the center; The pull plate (53) is provided with a first positioning hole (531), and the stud of the limiting bolt (54) can be inserted into the first positioning hole (531) and the pull hole (4931) to connect the lever (493) and the pull plate (53).

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