Supercharger and ceramic press

Abstract

The utility model relates to a supercharger and a ceramic press. The supercharger comprises a supercharging oil cylinder, a supercharging piston and a return piston, a pressurizing oil cavity is formed in the pressurizing oil cylinder, the pressurizing piston is arranged in the pressurizing oil cavity in a sliding mode, a return stroke oil cavity is formed in the pressurizing piston, the return stroke piston is arranged in the return stroke oil cavity, the return stroke oil cavity is divided into a lower return stroke cavity and an upper return stroke cavity by the return stroke piston, and the lower return stroke cavity and the upper return stroke cavity are sealed with each other. And the return stroke lower cavity and the return stroke upper cavity are respectively communicated with a return stroke oil way through a connecting oil duct. According to the supercharger, due to the fact that the space needed by the return stroke oil cavity is small, pressure oil needed when the return stroke action is completed is smaller than the required amount of a traditional supercharger, the using amount of the pressure oil is reduced, the oil injection time is shortened, and the working speed of the supercharger is increased; the return piston is of a detachable split structure, the machining difficulty is lowered, the bending deformation phenomenon generated during storage and hoisting is reduced, and then the production cost is lowered.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic presses, in particular to a supercharger and a ceramic press. Background Art

[0002] The existing traditional supercharger usually adopts a single piston rod hydraulic cylinder structure, such as Figure 1 As shown, the upper chamber 011 is the high-pressure output end, which is connected to the main oil cylinder of the compressor, and the lower chamber 010 is the low-pressure input end, which is connected to the main pump. The pressure oil enters the rodless chamber 010 in the supercharger through this; and the high-pressure oil in the upper chamber 011 in the supercharger enters the main oil cylinder. After completing the boosting action, the piston 030 in the supercharger has extended a certain stroke. If the next boosting action is to be performed, the piston 030 in the supercharger needs to perform a return action. During the return stroke, the pressure oil enters the upper chamber 011 of the supercharger, and the hydraulic oil in the lower chamber 010 of the supercharger enters the oil tank, so that the piston 030 in the supercharger is reset, thereby completing the return stroke.

[0003] From the return process of the above-mentioned traditional supercharger, it can be seen that the piston 030 in the traditional supercharger is reset directly through the pressure oil entering the upper chamber 011 to push the piston 030, and the hydraulic oil in the lower chamber 010 is directly discharged into the oil tank. A large amount of pressure oil is consumed in this process, and the return time of the piston 030 is long. Utility Model Content

[0004] Based on this, the purpose of the present invention is to overcome the shortcomings and deficiencies of the prior art and to provide a supercharger and a ceramic press.

[0005] In a first aspect, the utility model provides a supercharger, comprising:

[0006] Booster cylinder, booster piston and return piston;

[0007] The boosting oil cylinder is provided with a boosting oil chamber inside, the boosting piston is slidably arranged in the boosting oil chamber, the boosting piston is provided with a return oil chamber inside, the return piston is arranged in the return oil chamber, the return piston divides the return oil chamber into a return lower chamber and a return upper chamber which are sealed from each other, the return lower chamber and the return upper chamber are respectively connected with the return oil circuit through connecting oil passages;

[0008] The booster piston comprises a booster piston body and a booster piston rod, one end of the booster piston rod is connected to the booster piston body, and the booster piston rod passes through an end cover of one side of the booster oil cylinder;

[0009] The return piston includes a return piston body, a return lower piston rod and a return upper piston rod, one end of the return lower piston rod is fixed to the end cover on the other side of the booster cylinder, and the other end of the return lower piston rod is connected to one side of the return piston body; a connecting part is provided on the other side of the return piston body, one end of the return upper piston rod is detachably connected to the connecting part, and the other end of the return upper piston rod passes through the return oil chamber.

[0010] Furthermore, the composite supercharger further comprises a displacement detection unit, wherein the displacement detection unit comprises a displacement sensor and a magnetic ring member matched with the displacement sensor;

[0011] The displacement sensor is arranged outside the booster cylinder, the magnetic ring is arranged at the other end of the booster piston rod away from the booster piston body, and the magnetic ring can move within the sensing range of the displacement sensor.

[0012] Furthermore, the magnetic ring component includes an annular magnetic ring and a mounting seat, the annular magnetic ring is arranged on the mounting seat, the mounting seat is fixed to the other end of the booster piston rod away from the booster piston body by bolts, and the mounting seat is made of non-magnetic material.

[0013] Furthermore, it also includes a dust cover, which is arranged on a side end cover of the booster cylinder, the magnetic ring is located in the dust cover, the displacement sensor is arranged on the outside of the dust cover, the dust cover has an opening and a non-magnetic sealing plate is arranged at the opening, and the non-magnetic sealing plate is located between the magnetic ring and the dust cover.

[0014] Furthermore, it also includes an air filter, which is arranged on the top of the dust cover.

[0015] Furthermore, it also includes a reversing valve connected to the return oil circuit, and the reversing valve is used to control the oil inlet and outlet directions of the return lower chamber and the return upper chamber.

[0016] In a second aspect, the utility model provides a ceramic press, comprising the supercharger described in the first aspect of the utility model.

[0017] Compared with the prior art, the beneficial effects of a supercharger in an embodiment of the utility model are as follows:

[0018] 1. A supercharger of the utility model realizes the return stroke of the supercharger piston by making the supercharger piston move up and down along the return piston under the pressure in the return oil chamber. Since the space required for the return oil chamber is small, the pressure oil required to complete the return action is less than that required by the traditional supercharger, thereby reducing the amount of pressure oil used and saving energy.

[0019] 2. The return piston of a supercharger of the utility model is a detachable split structure, which reduces the difficulty of processing and reduces the bending deformation phenomenon generated during storage and lifting, thereby reducing production costs.

[0020] 3. The magnetic ring of a supercharger of the utility model is located in a dust cover, and the displacement sensor is arranged outside the dust cover. The displacement sensor is installed externally, which can reduce the requirements for the outer dimensions of the dust cover and reduce the space occupied by the supercharger. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a supercharger in the prior art;

[0022] Figure 2 It is a schematic diagram of the structure of the supercharger of the utility model;

[0023] Figure 3 for Figure 2 Magnified view of area A shown;

[0024] Figure 4 It is a cross-sectional view of the supercharger of the utility model;

[0025] In the figure: 110, boost cylinder; 111, boost lower chamber; 112, boost upper chamber; 113, low-pressure channel; 114, high-pressure channel; 120, boost piston; 121, boost piston rod; 122, return lower chamber; 123, return upper chamber; 140, displacement sensor; 150, magnetic ring; 151, mounting seat; 152, annular magnetic ring; 160, return piston; 161, return lower piston rod; 162, connecting part; 163, return upper piston rod; 164, connecting oil channel; 170, dust cover; 171, sealing plate; 180, air filter; 190, reversing valve. DETAILED DESCRIPTION

[0026] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0029] In view of the technical problems in the background technology, the present utility model provides a supercharger, such as Figures 2 to 4 As shown, in one embodiment, the booster includes a boosting oil cylinder 110, a boosting piston 120 and a return piston 160. A boosting oil chamber is provided inside the boosting oil cylinder 110, and the boosting piston 120 is slidably disposed in the boosting oil chamber. The boosting piston 120 divides the boosting oil chamber into a boosting lower chamber 111 and a boosting upper chamber 112 which are sealed with each other. The boosting lower chamber 111 is connected to the main oil circuit through a low-pressure channel 113, and the boosting upper chamber 112 is connected to the main oil circuit through a high-pressure channel 114; a return oil chamber is provided inside the boosting piston 120, and the return oil chamber passes through the boosting piston 120. The return piston 160 is disposed in the return oil chamber, and the return piston 160 divides the return oil chamber into a return lower chamber 122 and a return upper chamber 123 which are sealed with each other. The return lower chamber 122 and the return upper chamber 123 are respectively connected to the return oil circuit through a connecting oil passage 164. When oil is injected into the return oil chamber, the pressure in the return oil chamber increases. Since the return piston 160 is fixed, the booster piston 120 moves up and down along the return piston 160 under the pressure in the return oil chamber, thereby realizing the return of the booster piston 120. Since the space required for the return oil chamber is small, the pressure oil required to complete the return action is less than that required by the traditional supercharger, thereby reducing the amount of pressure oil used, shortening the oil injection time, and increasing the working speed of the supercharger.

[0030] Specifically, the booster piston 120 includes a booster piston body and a booster piston rod 121, one end of the booster piston rod 121 is connected to the booster piston body, and the booster piston rod 121 passes through the end cover of one side of the booster oil cylinder 110; the return piston 160 includes a return piston body, a return lower piston rod 161 and a return upper piston rod 163, one end of the return lower piston rod 161 is fixed to the end cover of the other side of the booster oil cylinder 110, and the other end of the return lower piston rod 161 is connected to one side of the return piston body; a connecting portion 162 is provided on the other side of the return piston body, one end of the return upper piston rod 163 is detachably connected to the connecting portion 162, and the other end of the return upper piston rod 163 passes through the return oil chamber. In this embodiment, the return piston 160 is a detachable split structure, which reduces the processing difficulty, reduces the bending deformation phenomenon generated during storage and hoisting, and thus reduces the production cost.

[0031] In one embodiment, Figure 2As shown, the booster also includes a displacement detection unit, which includes a displacement sensor 140 and a magnetic ring 150 that cooperates with the displacement sensor 140. The displacement sensor 140 is arranged outside the boosting cylinder 110, and the magnetic ring 150 is arranged at the other end of the boosting piston rod 121 away from the boosting piston body. The magnetic ring 150 can move within the sensing range of the displacement sensor 140, and the magnetic signal is detected by the displacement sensor 140 body. After signal conversion and transmission, it is read by the PLC and used to perform position closed-loop control on the boosting piston 120.

[0032] Specifically, the magnetic ring 150 includes an annular magnetic ring 152 and a mounting seat 151. The annular magnetic ring 152 is arranged on the mounting seat 151. The mounting seat 151 is fixed to the other end of the booster piston 120 rod away from the booster piston 120 body by bolts. The mounting seat 151 is made of non-magnetic material.

[0033] Preferably, the supercharger also includes a dust cover 170, which is arranged on a side end cover of the boosting cylinder 110, the magnetic ring 150 is located in the dust cover 170, and the displacement sensor 140 is arranged on the outside of the dust cover 170. The dust cover 170 has an opening and a non-magnetic sealing plate 171 is arranged at the opening. The non-magnetic sealing plate 171 is located between the magnetic ring 150 and the dust cover 170. The displacement sensor 140 is externally installed, which can reduce the external size requirements of the dust cover 170 and reduce the space occupied by the supercharger.

[0034] More preferably, the supercharger further includes an air filter 180 , and the air filter 180 is disposed on the top of the dust cover 170 .

[0035] In one embodiment, the supercharger further includes a reversing valve 190 connected to the return oil circuit, and the reversing valve 190 is used to control the oil inlet and outlet directions of the return lower chamber 122 and the return upper chamber 123, thereby realizing the function of adjusting the position of the boosting piston 120.

[0036] The embodiments of the present utility model also protect a ceramic press, which includes the supercharger in any one of the above embodiments.

[0037] The working principle of the supercharger of the utility model embodiment is as follows:

[0038] When the supercharger is started, the pressure oil enters the supercharging lower chamber 111, pushing the supercharging piston 120 upward, and the high-pressure oil in the supercharging upper chamber 112 is squeezed into the main oil cylinder, thereby supercharging the main oil cylinder. After the supercharging action is completed, the supercharging piston 120 has moved upward for a certain stroke, and the supercharging piston 120 needs to perform a return action before the supercharger can perform the next supercharging action.

[0039] The boost lower chamber 111 and the boost upper chamber 112 are connected to the return oil circuit in the main oil circuit. When the reversing valve 190 is energized, the pressure oil enters the return lower chamber 122, and the return upper chamber 123 is connected to the return oil circuit in the return oil circuit. The boost piston 120 moves downward under the action of the pressure oil in the return lower chamber 122. At the same time, the boost lower chamber 111 discharges oil and the boost upper chamber 112 takes in oil, thereby realizing the return action of the boost piston 120.

[0040] After each cycle of pressing of the ceramic press is completed, the booster piston 120 needs to be reset through the return cylinder, and the two chambers of the supercharger are both connected to the return oil. For example, after the supercharging is completed, the booster piston 120 extends a certain stroke. This stroke is sufficient to ensure the amount of oil for the next low-pressure pressurization (reverse pressurization of the supercharger), and there is still too much oil left, resulting in insufficient boosting stroke for the next time. Therefore, after the supercharging is completed in each cycle of pressing, the piston needs to be retracted a certain distance through the return cylinder to ensure that the next boosting stroke is sufficient. On the contrary, if the low-pressure oil is insufficient, the piston needs to be extended a certain distance after the supercharging is completed to ensure that the next low-pressure stroke is sufficient.

[0041] Compared with the prior art, the beneficial effects of a supercharger in an embodiment of the utility model are as follows:

[0042] 1. A supercharger in an embodiment of the utility model realizes the return stroke of the supercharger piston by making the supercharger piston move up and down along the return piston under the pressure in the return oil chamber. Since the space required for the return oil chamber is small, the pressure oil required to complete the return action is less than that required by the traditional supercharger, thereby reducing the amount of pressure oil used and saving energy.

[0043] 2. The return piston of a supercharger in an embodiment of the utility model is a detachable split structure, which reduces the difficulty of processing and reduces the bending deformation phenomenon caused during storage and lifting, thereby reducing production costs.

[0044] 3. In a supercharger of an embodiment of the utility model, the magnetic ring is located in a dust cover, and the displacement sensor is arranged outside the dust cover. The displacement sensor is externally installed, which can reduce the external dimension requirements of the dust cover and reduce the space occupied by the supercharger.

[0045] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A supercharger, characterized in that: include: Booster cylinder, booster piston and return piston; The boosting oil cylinder is provided with a boosting oil chamber inside, the boosting piston is slidably arranged in the boosting oil chamber, the boosting piston is provided with a return oil chamber inside, the return piston is arranged in the return oil chamber, the return piston divides the return oil chamber into a return lower chamber and a return upper chamber which are sealed from each other, the return lower chamber and the return upper chamber are respectively connected with the return oil circuit through connecting oil passages; The booster piston comprises a booster piston body and a booster piston rod, one end of the booster piston rod is connected to the booster piston body, and the booster piston rod passes through an end cover on one side of the booster oil cylinder; The return piston includes a return piston body, a return lower piston rod and a return upper piston rod, one end of the return lower piston rod is fixed to the end cover on the other side of the booster cylinder, and the other end of the return lower piston rod is connected to one side of the return piston body; a connecting part is provided on the other side of the return piston body, one end of the return upper piston rod is detachably connected to the connecting part, and the other end of the return upper piston rod passes through the return oil chamber.

2. A supercharger according to claim 1, characterized in that: The supercharger further comprises a displacement detection unit, wherein the displacement detection unit comprises a displacement sensor and a magnetic ring member matched with the displacement sensor; The displacement sensor is arranged outside the booster cylinder, the magnetic ring is arranged at the other end of the booster piston rod away from the booster piston body, and the magnetic ring can move within the sensing range of the displacement sensor.

3. A supercharger according to claim 2, characterized in that: The magnetic ring component includes an annular magnetic ring and a mounting seat, the annular magnetic ring is arranged on the mounting seat, the mounting seat is fixed to the other end of the booster piston rod away from the booster piston body by bolts, and the mounting seat is made of non-magnetic material.

4. A supercharger according to claim 2, characterized in that: It also includes a dust cover, which is arranged on one side end cover of the booster cylinder, the magnetic ring is located in the dust cover, the displacement sensor is arranged on the outside of the dust cover, the dust cover has an opening and a non-magnetic sealing plate is arranged at the opening, and the non-magnetic sealing plate is located between the magnetic ring and the dust cover.

5. A supercharger according to claim 4, characterized in that: An air filter is also included, and the air filter is arranged on the top of the dust cover.

6. A supercharger according to claim 1, characterized in that: It also includes a reversing valve connected to the return oil circuit, and the reversing valve is used to control the oil inlet and outlet directions of the return lower chamber and the return upper chamber.

7. A ceramic press, characterized in that: A supercharger comprising any one of claims 1 to 6.

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