CN212893941U - Flange hydraulic clamping device and polycrystalline silicon reduction furnace with same - Google Patents

Abstract

The utility model discloses a flange hydraulic clamping device and polycrystalline silicon reduction furnace that has it, flange hydraulic clamping device includes pneumatic cylinder, pole subassembly and hydraulic system. The hydraulic cylinder comprises a cylinder body and a piston, a cylinder chamber is arranged in the cylinder body, and a connector is arranged on the cylinder body and communicated with the cylinder chamber; the rod assembly is connected with the piston and can move relative to the cylinder, and one part of the rod assembly and the other part of the rod assembly are suitable for clamping the flange assembly, or the rod assembly and the cylinder are suitable for clamping the flange assembly; the hydraulic system is connected with the interface, the hydraulic system can supply oil to the cylinder chamber through the interface to drive the rod assembly and the cylinder body to move relatively so as to clamp the flange assembly, and oil in the cylinder chamber can flow back to the hydraulic system through the interface to drive the rod assembly or the cylinder body to reset so as to release the flange assembly. According to the utility model discloses flange hydraulic clamping device has and can shorten production time, reduces intensity of labour, improves production efficiency's advantage.

Description

Flange hydraulic clamping device and polycrystalline silicon reduction furnace with same

Technical Field

The utility model relates to a hydraulic clamping device's technical field specifically, relates to a flange hydraulic clamping device and polycrystalline silicon reduction furnace who has this flange hydraulic clamping device.

Background

In the field of polysilicon production, a polysilicon reduction furnace is a common device for a polysilicon reduction production process. The polysilicon reduction furnace needs to have good sealing performance so as to ensure the quality of polysilicon reduction, and a flange fastener in the polysilicon reduction furnace is a key part which needs to be frequently operated in the process of the polysilicon reduction production process.

The traditional flange bolt fastening system of the polycrystalline silicon reduction furnace basically realizes the loading or unloading of the pretightening force of the bolts through the screwing and loosening of bolts and nuts. Taking a 24-pair rod reduction furnace with the outer diameter of a flange of a certain polycrystalline silicon production plant being 2.7m-2.9m as an example, the flange is provided with 40 bolts with larger nominal diameter, and when the flange is fastened, workers need to symmetrically fasten all the bolts in sequence; when the flange is unloaded, the bolts are symmetrically disassembled in sequence; therefore, the fastening and dismounting operations are time-consuming and labor-consuming, the production time of single-furnace polysilicon is not shortened, and the manual operation process of the flange bolt fastening system of the reduction furnace is to be changed urgently.

The inventor finds that the following two problems exist in the process of frequent start-stop operation of the flange through research: firstly, the flange needs enough bolt pretightening force to ensure the sealing performance; secondly, the loading and unloading process of the pre-tightening force of the flange bolt only stays at the level of manual operation at present, a large amount of manpower and material resources are consumed, and meanwhile, the operation time is long. In view of this, it is necessary to improve the way of manually operating the bolts on the premise of ensuring the flange seal, and to reduce the unnecessary manual operation time and improve the production efficiency so as to reduce the production cost of the polysilicon while reducing the human intervention.

SUMMERY OF THE UTILITY MODEL

The present invention aims at solving at least one of the technical problems in the related art to a certain extent.

Therefore, the embodiment of an aspect of the utility model provides a flange hydraulic clamping device, the utility model has the advantages of can shorten production time, reduce intensity of labour, improve production efficiency.

The embodiment of the second aspect of the utility model provides a polycrystalline silicon reduction furnace.

According to the utility model discloses a flange hydraulic clamping device of embodiment of first aspect includes: the hydraulic cylinder comprises a cylinder body and a piston, a cylinder chamber is arranged in the cylinder body, a connector is arranged on the cylinder body and communicated with the cylinder chamber, and the piston is arranged in the cylinder chamber; a rod assembly connected to the piston and movable relative to the cylinder, the flange assembly being adapted to be clamped between one portion of the rod assembly and another portion of the rod assembly or between the rod assembly and the cylinder; the hydraulic system is connected with the interface, the hydraulic system can supply oil to the cylinder chamber through the interface to drive the rod assembly and the cylinder body to move relatively so as to clamp the flange assembly, and oil in the cylinder chamber can flow back to the hydraulic system through the interface to drive the rod assembly or the cylinder body to reset so as to release the flange assembly.

According to the utility model discloses flange hydraulic clamping device, when needs press from both sides tight seal to the flange subassembly, hydraulic system passes through the interface and supplies oil to the cylinder chamber of pneumatic cylinder to drive rod subassembly and cylinder body relative movement, so that the interval between partly of pole subassembly and the other part of pole subassembly reduces, perhaps the interval between pole subassembly and the cylinder body reduces, thereby can press from both sides tight seal to the upper and lower terminal surface of flange subassembly. When flange hydraulic clamping device need release the flange subassembly, fluid in the cylinder chamber can be discharged to hydraulic system by the interface in to carry out the pressure release to flange hydraulic clamping device, so that the interval increase between partly of pole subassembly and the another part of pole subassembly, or the interval increase between pole subassembly and the cylinder body, take off flange hydraulic clamping device from the flange subassembly in order to make things convenient for operating personnel. The flange hydraulic clamping device clamps and releases the flange assembly, so that the labor intensity of operators can be reduced, the operation time for sealing the flange assembly or releasing the flange assembly can be shortened, the production efficiency of equipment is improved, and the production cost of polycrystalline silicon is reduced.

In some embodiments, the rod assembly comprises a first rod and a second rod, the first rod is connected with the piston and movable relative to the cylinder, a first end of the first rod is connected with a first end of the second rod, a second end of the first rod and a second end of the second rod are suitable for clamping the flange assembly, and the distance between the second end of the first rod and the second end of the second rod in the length direction of the first rod is adjustable to clamp the flange assembly and release the flange assembly; the hydraulic system can supply oil into the cylinder chamber through the interface to drive the first rod to move relative to the cylinder body so as to clamp the flange assembly, and oil in the cylinder chamber can flow back into the hydraulic system through the interface to drive the first rod to reset so as to release the flange assembly.

In some embodiments, the first end of the first rod and the first end of the second rod are rotatably connected, the second rod further comprises a connecting portion between the first end of the second rod and the second end of the second rod, the flange hydraulic clamping device further comprises a mounting bracket rotatably connected to the connecting portion, the mounting bracket is provided with a support portion adjacent to the second end of the first rod, and the second end of the second rod and the support portion are adapted to clamp the flange assembly therebetween.

In some embodiments, the second end of the second rod includes a pressing plane toward the support portion, and the support portion includes a support plane toward the pressing plane.

In some embodiments, a limiting member is disposed on the first rod, and the limiting member is configured to limit axial movement of the first rod after the oil in the cylinder chamber flows back to the hydraulic system.

In some embodiments, the retainer is threadably coupled to the second end of the first rod, and abuts against the mount to limit axial movement of the first rod after oil in the cylinder chamber flows back to the hydraulic system.

In some embodiments, a resilient member is installed in the cylinder chamber, and the resilient member has a resilient force urging the first rod to return after the oil in the cylinder chamber returns to the hydraulic system.

In some embodiments, the piston divides the cylinder chamber into a first chamber and a second chamber, the first chamber in communication with the port, the resilient member being located within the second chamber.

In some embodiments, the first rod includes a first section and a second section, a first end of the first section is connected to a first end of the second section, the first end of the first section is located within the second chamber, and a second end of the first section extends out of the cylinder and is rotatably connected to a first end of the second rod; the first end of the second section is arranged in the first chamber, and the second end of the second section extends out of the cylinder body and is rotatably connected with the mounting frame.

In some embodiments, the rod assembly comprises a first rod, a first end of the first rod is connected to the piston and is relatively movable with the cylinder, a second end of the first rod and the cylinder are adapted to clamp a flange assembly therebetween, a distance between the second end of the first rod and the cylinder in a length direction of the first rod is adjustable to clamp the flange assembly and release the flange assembly, the hydraulic system can supply oil into the cylinder chamber through the interface to drive the first rod and the cylinder to relatively move so as to clamp the flange assembly, and the oil in the cylinder chamber can flow back into the hydraulic system through the interface to drive the first rod or the cylinder to reset so as to release the flange assembly.

In some embodiments, the lever assembly further comprises a pin shaft, the second end of the first lever being provided with a pin shaft hole, the pin shaft being fittable within the pin shaft hole to locate the second end of the first lever.

In some embodiments, the first rod is movable relative to the cylinder, the piston drives the first rod to move in a direction away from the cylinder when the hydraulic system supplies oil to the cylinder chamber such that the second end of the first rod and the cylinder clamp the flange assembly, and the pin is engageable within the pin bore to limit movement of the first rod when the second end of the first rod and the cylinder clamp the flange assembly.

In some embodiments, a resilient member is installed in the cylinder chamber, and the resilient member has a resilient force urging the first rod to return after the oil in the cylinder chamber returns to the hydraulic system.

In some embodiments, the pin is fitted in the pin hole to restrict movement of the first rod, and the hydraulic system drives the cylinder body to move relative to the first rod in a direction toward the pin when the hydraulic system supplies oil to the cylinder chamber.

In some embodiments, an elastic member is installed in the cylinder chamber, and the elastic member has an elastic force that pushes the cylinder body to return after the oil in the cylinder chamber returns to the hydraulic system.

In some embodiments, the elastic member is at least one of a spring and a disc spring.

In some embodiments, the hydraulic system comprises: a hydraulic pump which can supply oil to the cylinder chamber through the interface; the pressure relay is used for detecting the oil pressure in the cylinder chamber; and the controller is connected with the pressure relay and the hydraulic pump so as to control the hydraulic pump according to the pressure detected by the pressure relay.

In some embodiments, the hydraulic cylinders and the rod assemblies are multiple, the hydraulic cylinders and the rod assemblies correspond to each other one by one, and the hydraulic cylinders are connected in series and communicated with the hydraulic system through oil conveying pipes.

According to the utility model discloses a polycrystalline silicon reduction furnace of the embodiment of second aspect includes flange subassembly and the flange hydraulic clamping device of any one of the above-mentioned embodiments, flange hydraulic clamping device is used for pressing from both sides tight the flange subassembly.

According to the utility model discloses polycrystalline silicon reduction furnace, at polycrystalline silicon reduction furnace during operation, through the quick clamp of hydraulic system actuating lever subassembly to the flange subassembly of the furnace mouth department of polycrystalline silicon reduction furnace and release, operating time when can shortening sealed flange subassembly or release flange subassembly improves polycrystalline silicon reduction furnace's production efficiency, has reduced the manufacturing cost of polycrystalline silicon.

Drawings

Fig. 1 is a schematic view of a flange hydraulic clamping device according to an embodiment of the present invention.

Fig. 2 is a front view of a flange hydraulic clamping device according to an embodiment of the present invention.

Fig. 3 is a side view of a flange hydraulic clamping device according to an embodiment of the present invention.

Fig. 4 is a schematic view of a flange hydraulic clamping arrangement according to another embodiment of the present invention.

Fig. 5 is a schematic view of the installation of the flange hydraulic clamping device of fig. 4.

Fig. 6 is a schematic view of a flange hydraulic clamping arrangement according to yet another embodiment of the present invention.

Fig. 7 is a schematic view of the installation of the flange hydraulic clamping device of fig. 6.

Fig. 8 is a schematic diagram of a plurality of flange hydraulic clamps in series according to an embodiment of the present invention.

Reference numerals:

100. a flange hydraulic clamping device;

101. a hydraulic cylinder; 1011. a cylinder chamber; 10111. a piston; 101111, grooves; 10112. a first chamber; 101121, a boss; 10113. a second chamber; 1012. an interface; 1013. an elastic member; 10131. a spring; 10132. a disc spring; 1014. quickly pulling out the plug; 1015. a cylinder body;

102. a lever assembly; 1021. a first lever; 10211. a first stage; 10212. a second stage; 1022. a second lever; 10221. extruding a plane; 1023. a limiting member; 1024. a pin shaft hole; 10241. a pin shaft;

103. a mounting frame; 1031. a connecting portion; 1032. a support portion; 10321. a support plane; 1033. a handle;

104. a hydraulic system; 1041. a hydraulic pump; 10411. an oil delivery pipe; 1042. a pressure relay; 1043. an electromagnetic valve;

200. a flange assembly; 201. an upper flange; 202. a lower flange; 2021. a flange rib plate; 20211. and (7) positioning the holes.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

A flange hydraulic clamping device 100 and a polycrystalline silicon reduction furnace having the flange hydraulic clamping device 100 according to an embodiment of the present invention will be described below with reference to fig. 1 to 8.

As shown in fig. 1, the flange hydraulic clamping device 100 according to the embodiment of the present invention includes a hydraulic cylinder 101, a rod assembly 102 and a hydraulic system 104, wherein the hydraulic cylinder 101 includes a cylinder 1015 and a piston 10111, a cylinder chamber 1011 is provided in the cylinder 1015, the piston 10111 is provided in the cylinder chamber 1011, an interface 1012 is provided on the cylinder 1015, the interface 1012 is communicated with the cylinder chamber 1011, and oil in the cylinder chamber 1011 is injected or discharged through the interface 1012.

As shown in fig. 1 and 4 and 6, rod assembly 102 is coupled to piston 10111, and rod assembly 102 is movable relative to cylinder 1015, with flange assembly 200 being adapted to be clamped between one portion of rod assembly 102 and another portion of rod assembly 102, or flange assembly 200 being adapted to be clamped between rod assembly 102 and cylinder 1015. Hydraulic system 104 is connected to interface 1012, hydraulic system 104 can supply oil into cylinder chamber 1011 through interface 1012 to drive rod assembly 102 and cylinder 1015 to move relatively so as to clamp flange assembly 200, and oil in cylinder chamber 1011 can flow back into hydraulic system 104 through interface 1012 to drive rod assembly 102 or cylinder 1015 to reset so as to release flange assembly 200.

According to the flange hydraulic clamping device 100 of the embodiment of the present invention, when the flange assembly 200 needs to be clamped and sealed, the hydraulic system 104 supplies oil to the cylinder chamber 1011 of the hydraulic cylinder 101 through the interface 1012 to drive the rod assembly 102 and the cylinder body 1015 to move relatively, so that the distance between one part of the rod assembly 102 and the other part of the rod assembly 102 is reduced, or the distance between the rod assembly 102 and the cylinder body 1015 is reduced, thereby clamping and sealing the upper and lower end faces of the flange assembly 200. When flange hydraulic clamping device 100 requires the release of flange assembly 200, oil in cylinder chamber 1011 may be drained from interface 1012 into hydraulic system 104, thereby relieving flange hydraulic clamping device 100 to increase the spacing between one portion of rod assembly 102 and another portion of rod assembly 102, or to increase the spacing between rod assembly 102 and cylinder 1015, to facilitate the removal of flange hydraulic clamping device 100 from flange assembly 200 by an operator. The flange hydraulic clamping device 100 clamps and releases the flange assembly 200, so that the labor intensity of operators can be reduced, the operation time of sealing the flange assembly 200 or releasing the flange assembly 200 can be shortened, the production efficiency of equipment is improved, and the production cost of polycrystalline silicon is reduced.

In some embodiments, the rod assembly 102 includes a first rod 1021 and a second rod 1022, the first rod 1021 is connected to the piston 10111 and is movable relative to the cylinder 1015, a first end of the first rod 1021 (e.g., an upper end of the first rod 1021 in fig. 1) is connected to a first end of the second rod 1022 (e.g., a right end of the second rod 1022 in fig. 1), a second end of the first rod 1021 (e.g., a lower end of the first rod 1021 in fig. 1) is adapted to clamp the flange assembly 200 with the second end of the second rod 1022 (e.g., a left end of the second rod 1022 in fig. 1), and a distance between the second end of the first rod 1021 (e.g., a lower end of the first rod 1021 in fig. 1) and the second end of the second rod 1022 (e.g., a left end of the second rod 1022 in fig. 1) is adjustable in a length direction of the first rod 1021 (e.g., a top-bottom direction in fig. 1) to clamp the flange assembly. The hydraulic system 104 may supply oil to the cylinder chamber 1011 through the interface 1012 to drive the first rod 1021 to move relative to the cylinder 1015 to clamp the flange assembly 200, and the oil in the cylinder chamber 1011 may flow back into the hydraulic system 104 through the interface 1012 to drive the first rod 1021 to reset to release the flange assembly 200. It should be noted that the direction in which the first lever 1021 is reset is a direction in which the first lever 1021 moves downward in fig. 1.

According to the utility model discloses flange hydraulic clamping device 100, when needs clamp flange subassembly 200 and seal, hydraulic system 104 passes through interface 1012 to the oil feed in the cylinder chamber 1011 of pneumatic cylinder 101 to drive piston 10111 and drive first pole 1021 and remove, and first pole 1021 drives the linkage of second pole 1022 simultaneously, makes the interval between the second end of first pole 1021 and second pole 1022 reduce, thereby can clamp flange subassembly 200's upper and lower terminal surface and seal. When the flange hydraulic clamping device 100 needs to release the flange assembly 200, oil in the cylinder chamber 1011 can be discharged into the hydraulic system 104 through the interface 1012, so that the flange hydraulic clamping device 100 is depressurized, and the distance between the second end of the first rod 1021 and the second end of the second rod 1022 is increased, so that an operator can conveniently remove the flange hydraulic clamping device 100 from the flange assembly 200.

In some embodiments, as shown in fig. 1 to 3, a first end of the first lever 1021 (e.g., an upper end of the first lever 1021 in fig. 1) and a first end of the second lever 1022 (e.g., a right end of the second lever 1022 in fig. 1) are rotatably connected. The second lever 1022 further includes a connecting portion 1031 located between a first end of the second lever 1022 (e.g., a right end of the second lever 1022 in fig. 1) and a second end of the second lever 1022 (e.g., a left end of the second lever 1022 in fig. 1).

The flange hydraulic clamping device 100 further includes a mounting bracket 103, the mounting bracket 103 is rotatably connected to the connecting portion 1031, in other words, the second lever 1022 can rotate around the connecting portion 1031, and the rotation plane of the second lever 1022 is perpendicular to the upper end surface or the lower end surface of the flange assembly 200. The mounting bracket 103 is provided with a support portion 1032 adjacent to a second end of the first rod 1021 (e.g., a lower end of the mounting bracket 103 in fig. 1), and the support portion 1032 is extended toward the flange assembly 200 (e.g., a left end in fig. 1), such that the second end of the second rod 1022 and the support portion 1032 are adapted to clamp the flange assembly 200 therebetween.

When the flange assembly 200 needs to be clamped and sealed, the hydraulic system 104 supplies oil to the chamber 1011 of the hydraulic cylinder 101 through the interface 1012, so as to drive the piston 10111 to drive the first rod 1021 to move, and simultaneously, the first rod 1021 drives the second rod 1022 to link. Since the first end of the first lever 1021 (e.g., the upper end of the first lever 1021 in fig. 1) is rotatably connected to the first end of the second lever 1022 (e.g., the right end of the second lever 1022 in fig. 1), and the second lever 1022 can rotate around the connecting portion 1031, the first end of the second lever 1022 can be driven by the first lever 1021 to move in a direction away from the flange assembly 200 (e.g., upward in fig. 1), and the second end of the second lever 1022 can be driven to move in a direction close to the flange assembly 200 (e.g., downward in fig. 1), so as to reduce the distance between the second end of the second lever 1022 and the supporting portion 1032, thereby clamping the flange assembly 200.

Further, as shown in fig. 1 and 3, the second end of the second lever 1022 includes a pressing plane 10221 facing the support 1032, and the support 1032 includes a support plane 10321 facing the pressing plane 10221. In some embodiments of the present application, when the flange hydraulic clamping device 100 clamps the flange assembly 200, the pressing plane 10221 and the supporting plane 10321 respectively abut against end surfaces of upper and lower ends of the flange assembly 200, so as to increase a contact area between the flange hydraulic clamping device 100 and the flange assembly 200 and improve a sealing performance of the flange assembly 200.

In some embodiments, as shown in fig. 1, a limiting member 1023 is disposed on the first rod 1021, and the limiting member 1023 is used for limiting the axial movement of the first rod 1021 after the oil in the cylinder chamber 1011 returns to the hydraulic system 104. In other words, after the cylinder chamber 1011 is depressurized, the first rod 1021 can be fixed by the limiting member 1023, so that the pre-tightening force of the hydraulic clamping device on the flange assembly 200 can be continuously maintained under the condition that the cylinder chamber 1011 has no hydraulic force, and the problem that the hydraulic oil performance is deteriorated and the hydraulic system 104 is finally failed due to the temperature rise of the flange assembly 200 in the production operation process of the polycrystalline silicon reduction furnace is avoided.

Specifically, the limiting member 1023 is screwed to the second end of the first rod 1021, and after the oil in the cylinder chamber 1011 flows back to the hydraulic system 104, the limiting member 1023 is rotated, and the limiting member 1023 moves in a direction away from the cylinder 1015 (from top to bottom in fig. 1) until abutting against the mounting frame 103, so as to limit the axial movement of the first rod 1021. When the flange hydraulic clamping device 100 needs to be detached from the flange assembly 200, oil is supplied to the cylinder chamber 1011 through the hydraulic system 104, when the oil pressure in the cylinder chamber 1011 reaches a certain threshold value, the pre-tightening force between the limiting member 1023 and the mounting block 103 can be offset, so that an operator can conveniently move the limiting member 1023 towards the direction (from bottom to top in fig. 1) close to the cylinder body 1015, the limiting member 1023 is separated from the mounting block 103, then the oil in the cylinder chamber 1011 flows back to the hydraulic system 104, and the flange hydraulic clamping device 100 is detached.

In some embodiments, as shown in fig. 1 and 5, the elastic member 1013 is installed in the cylinder chamber 1011, and after the oil in the cylinder chamber 1011 returns to the hydraulic system 104, the elastic member 1013 has an elastic force that pushes the first rod 1021 to return. It should be noted that the direction in which the first lever 1021 is reset is the downward direction in fig. 1. The piston 10111 divides the cylinder chamber 1011 into a first chamber 10112 and a second chamber 10113, the first chamber 10112 communicates with the port 1012, and the elastic member 1013 is located in the second chamber 10113.

Optionally, the elastic member 1013 is at least one of a spring 10131 and a disc spring 10132, for example, the elastic member 1013 is the spring 10131 and the disc spring 10132, and the spring 10131 and the disc spring 10132 are disposed around the peripheral wall of the first rod 1021 and arranged up and down.

In some embodiments, as shown in fig. 1, first rod 1021 includes a first segment 10211 and a second segment 10212, a first end of first segment 10211 (e.g., a lower end of first segment 10211 in fig. 1) is coupled to a first end of second segment 10212 (e.g., an upper end of second segment 10212 in fig. 1), and first end of first segment 10211 (e.g., a lower end of first segment 10211 in fig. 1) is disposed within second chamber 10113, and a second end of first segment 10211 (e.g., an upper end of first segment 10211 in fig. 1) extends out of cylinder 1015 and is rotatably coupled to a first end of second rod 1022 (e.g., a right end of second rod 1022 in fig. 1).

A first end of second segment 10212 (e.g., an upper end of second segment 10212 in fig. 1) is disposed within first chamber 10112, and a second end of second segment 10212 (e.g., a lower end of second segment 10212 in fig. 1) extends out of cylinder 1015 and is slidably coupled to mounting bracket 103. Specifically, the cross-sectional area of the first section 10211 is greater than the cross-sectional area of the second section 10212, and the piston 10111 is sleeved at the first end of the second section 10212 and is disposed in abutment with the first end face of the first section 10211.

When the piston 10111 is subjected to oil pressure, the piston 10111 moves towards the first segment 10211, and when the piston 10111 moves to a step surface between the first segment 10211 and the second segment 10212, the piston 10111 drives the first rod 1021 to move synchronously, so that the piston 10111 and the first rod 1021 are linked.

In other embodiments, as shown in fig. 4 to 8, a first end of the first rod 1021 (e.g., an upper end of the first rod 1021 in fig. 4) is connected to the piston 10111, and the first rod 1021 and the cylinder 1015 are movable relative to each other, a second end of the first rod 1021 (e.g., a lower end of the first rod 1021 in fig. 4) and the cylinder 1015 are adapted to clamp the flange assembly 200, and a distance between the second end of the first rod 1021 (e.g., a lower end of the first rod 1021 in fig. 4) and the cylinder 1015 in a length direction of the first rod 1021 (e.g., a vertical direction in fig. 4) is adjustable to clamp the flange assembly 200 and release the flange assembly 200, i.e., the first rod 1021 is capable of extending and contracting within the cylinder 1015, or the cylinder 1015 is movable relative to the first rod 1021 to clamp the flange assembly 200.

As shown in fig. 1, the hydraulic system 104 is connected to the interface 1012, the hydraulic system 104 can supply oil into the cylinder chamber 1011 through the interface 1012 to drive the first rod 1021 to move relative to the cylinder 1015 so as to clamp the flange assembly 200, and the oil in the cylinder chamber 1011 can flow back into the hydraulic system 104 through the interface 1012 to drive the first rod 1021 to reset so as to release the flange assembly 200. It should be noted that, in fig. 4 and 5, the direction in which the first lever 1021 is reset is the direction in which the first lever 1021 moves upward; in fig. 6 and 7, the direction in which the first lever 1021 is reset is the direction in which the first lever 1021 moves downward.

According to the utility model discloses flange hydraulic clamping device 100, when needs clamp flange subassembly 200 and seal, hydraulic system 104 supplies oil to the cylinder chamber 1011 of pneumatic cylinder 101 in through interface 1012 to drive piston 10111 and drive first pole 1021 and remove, perhaps drive cylinder body 1015 relative first pole 1021 removes, makes the interval between the second end of first pole 1021 and the cylinder body 1015 reduce, thereby can clamp flange subassembly 200's upper and lower terminal surface and seal. When the flange hydraulic clamping device 100 needs to release the flange assembly 200, the oil in the cylinder chamber 1011 can be discharged into the hydraulic system 104 through the interface 1012, so as to relieve the flange hydraulic clamping device 100, so that the distance between the second end of the first rod 1021 and the cylinder 1015 is increased, and the flange hydraulic clamping device 100 can be conveniently taken off from the flange assembly 200 by an operator.

In some embodiments, as shown in fig. 4-7, the flange hydraulic clamping device 100 further includes a pin 10241, the second end of the first rod 1021 (e.g., the lower end of the first rod 1021 in fig. 4) is provided with a pin hole 1024, and the pin 10241 can be fitted in the pin hole 1024 to position the second end of the first rod 1021.

Specifically, by inserting the first rod 1021 into the axial hole of the flange assembly 200, the hydraulic system 104 then supplies oil into the chamber 1011 of the hydraulic cylinder 101 through the interface 1012 to drive the piston 10111 to move the first rod 1021, so that the distance between the second end of the first rod 1021 and the cylinder 1015 is reduced. In other words, the upper and lower end surfaces of the flange assembly 200 are closely fitted to the pin 10241 through a side of the cylinder 1015 adjacent to the second end of the first lever 1021 to clamp the flange assembly 200.

In some embodiments, as shown in fig. 4 and 5, the first rod 1021 is movable relative to the cylinder 1015, the piston 10111 drives the first rod 1021 to move in a direction away from the cylinder 1015 when the hydraulic system 104 supplies oil into the cylinder chamber 1011 such that the second end of the first rod 1021 (e.g., the lower end of the first rod 1021 in fig. 4) and the cylinder 1015 clamp the flange assembly 200, and the pin 10241 may fit within the pin hole 1024 to limit the movement of the first rod 1021 when the second end of the first rod 1021 and the cylinder 1015 clamp the flange assembly 200. One side of the flange assembly 200 is provided with a flange rib plate 2021, for example, the flange rib plate 2021 is provided at one side of the lower flange 202 of the flange assembly 200, the flange rib plate 2021 is provided with a positioning hole 20211, when the hydraulic cylinder 101 drives the first rod 1021 to extend downward, the pin hole 1024 can coincide with the positioning hole 20211, and then the pin 10241 is fitted in the pin hole 1024 to position the first rod 1021.

Specifically, as shown in fig. 4 and 5, when clamping the flange assembly 200, the hydraulic cylinder 101 is disposed on the upper end surface of the flange assembly 200 and is kept stationary, then the first rod 1021 is inserted into the shaft hole of the flange assembly 200, the hydraulic cylinder 101 drives the first rod 1021 to extend downward until the pin shaft hole 1024 on the first rod 1021 moves downward and coincides with the positioning hole 20211 of the flange rib 2021, and then the pin 10241 is inserted into the pin shaft hole 1024, so that the upper flange 201 and the lower flange 202 have a mutual abutting preload force therebetween.

Further, as shown in fig. 4 and 5, an elastic member 1013 is installed in the cylinder chamber 1011, and after the oil in the cylinder chamber 1011 returns to the hydraulic system 104, the elastic member 1013 has an elastic force that pushes the first rod 1021 to return.

Optionally, the elastic member 1013 is at least one of a spring 10131 and a disc spring 10132. For example, the elastic member 1013 is a spring 10131 and a disc spring 10132, and the spring 10131 and the disc spring 10132 are disposed around the first rod 1021 and arranged up and down. Thus, after the oil in the cylinder chamber 1011 returns to the hydraulic system 104, the elastic member 1013 tends to drive the first rod 1021 in the return direction (i.e., upward in fig. 4), so that the cylinder 1015 is always pre-tensioned between the side adjacent to the second end of the first rod 1021 and the pin 10241 to seal the flange assembly 200. In other words, after the hydraulic cylinder 101 is depressurized, the flange hydraulic clamping device 100 can continuously maintain the pre-tightening force of the hydraulic clamping device on the flange assembly 200 without the action of hydraulic pressure, so as to avoid the problem that the hydraulic oil performance deteriorates at high temperature and finally causes a fault of the hydraulic system 104 due to the temperature rise of the flange assembly 200 during the production operation of the polycrystalline silicon reduction furnace.

In other embodiments, as shown in fig. 6 and 7, when clamping the flange assembly 200, the pin hole 1024 of the first rod 1021 coincides with the positioning hole 20211 on the flange rib 2021, and then the pin 102411 penetrates into the pin hole 1024 and the positioning hole 20211, that is, the lower end of the first rod 1021 needs to be fixed to limit the movement of the first rod 1021, and then the hydraulic system 104 supplies oil to the cylinder chamber 1011, so that the piston 10111 is fixedly connected to the first rod 1021, and thus the hydraulic oil can push the piston 10111 and drive the upper end of the first rod 1021 to move upward relative to the cylinder 1015. It will of course be appreciated that the cylinder 1015 may be moved relative to the first rod 1021 in a direction toward the pin 10241, thereby causing one side of the cylinder 1015 to abut an end surface of the flange assembly 200, thereby clampingly securing the flange assembly 200.

Further, as shown in fig. 6 and 7, an elastic member 1013 is installed in the cylinder chamber 1011, and after the oil in the cylinder chamber 1011 returns to the hydraulic system 104, the elastic member 1013 has an elastic force that pushes the cylinder 1015 to return. In other words, after the hydraulic cylinder 101 is depressurized, the elastic member 1013 pushes the cylinder 1015 to move upward, so that the contact surface between the hydraulic cylinder 101 and the flange assembly 200 is disengaged, thereby facilitating the disassembling work of the flange hydraulic clamping device 100 by an operator.

In some embodiments, as shown in fig. 6 and 7, the piston 10111 divides the cylinder chamber 1011 into a first chamber 10112 and a second chamber 10113, the first chamber 10112 is located on a side of the piston 10111 adjacent to the second end of the first rod 1021 (e.g., a lower side of the piston 10111 in fig. 6), the second chamber 10113 is located on a side of the piston 10111 away from the second end of the first rod 1021 (e.g., an upper side of the piston 10111 in fig. 6), the first chamber 10112 is in communication with the interface 1012, and the elastic member 1013 is located within the second chamber 10113.

Optionally, the elastic member 1013 is a spring 10131 and a disc spring 10132, and the spring 10131 and the disc spring 10132 are disposed around the first rod 1021 and arranged up and down. The piston 10111 is provided with a groove 101111, the groove 101111 is recessed from a side of the piston 10111 away from the second end of the first rod 1021 towards the second end of the first rod 1021, for example, as shown in fig. 3, the groove 101111 is located at an upper end of the piston 10111. One end of the elastic member 1013 abuts against the bottom surface of the groove 101111, the other end of the elastic member 1013 abuts against the cylinder 1015, that is, the piston 10111 is disposed in the area enclosed by the groove 101111 and the cylinder 1015, and the elastic member 1013 is located in the second chamber 10113, that is, the elastic member 1013 may not contact with oil, thereby improving the service life of the elastic member 1013.

Further, as shown in fig. 3, a boss 101121 facing the piston 10111 is disposed in the first chamber 10112, after the oil in the cylinder chamber 1011 flows back to the hydraulic system 104, the piston 10111 abuts against the boss 101121, so that after the pressure of the cylinder 1015 is relieved, the cavity in the second chamber 10113 is not zero, and further, the subsequent oil is conveniently injected into the second chamber 10113.

In some embodiments, as shown in fig. 1, the hydraulic system 104 includes a hydraulic pump 1041, a pressure relay 1042, a solenoid valve 1043, and a controller (not shown). The hydraulic pump 1041 can supply oil to the cylinder chamber 1011 through the interface 1012, and the hydraulic pump 1041, the pressure relay 1042, the electromagnetic valve 1043 are electrically connected with the controller, so that the controller controls the opening and closing of the hydraulic pump 1041 according to the pressure detected by the pressure relay 1042. When the hydraulic pump 1041 supplies oil to the cylinder chamber 1011 to reach a certain preset pressure value, the pressure relay 1042 transmits the oil to the controller in an electric signal manner, and the controller controls the pressure relay 1042 to act to drive the electromagnetic valve 1043 to close the hydraulic pump 1041, so that the hydraulic pump 1041 stops supplying oil. Thus, the flange hydraulic clamping device 100 of some embodiments of the present application may achieve automatic clamping and sealing of the flange assembly 200, reducing human intervention.

In some embodiments, as shown in fig. 8, there are a plurality of hydraulic cylinders 101 and rod assemblies 102, a plurality of hydraulic cylinders 101 and a plurality of rod assemblies 102 are in one-to-one correspondence, and the plurality of hydraulic cylinders 101 are connected in series with each other through a flow pipe 10411 and are communicated with the hydraulic system 104, so that a single hydraulic system 104 can control the plurality of hydraulic cylinders 101 and rod assemblies 102.

Further, as shown in fig. 1 to 8, a quick-pull plug 1014 is provided at the connection between the interface 1012 and the oil pipeline 10411. After the flange assembly 200 is clamped and the hydraulic cylinder 101 is pressurized through the limiting part 1023, the hydraulic system 104 can be quickly separated from the hydraulic cylinder 101 through the quick-pull plug 1014, and the flexibility of the flange hydraulic clamping device 100 in use is improved.

A flange hydraulic clamping device 100 according to some specific examples of the present invention is described below with reference to the drawings.

As shown in fig. 1 to 3, a flange hydraulic clamping device 100 according to an embodiment of the present invention includes a hydraulic cylinder 101, a rod assembly 102, and a hydraulic system 104. The hydraulic cylinder 101 comprises a cylinder body 1015 and a piston 10111, a cylinder chamber 1011 is arranged in the cylinder body 1015, the piston 10111 is arranged in the cylinder chamber 1011, a connector 1012 is arranged on the cylinder body 1015, the connector 1012 is communicated with the cylinder chamber 1011, and oil liquid in the cylinder chamber 1011 is injected or discharged through the connector 1012. The elastic member 1013 is further installed in the cylinder chamber 1011, and after the oil in the cylinder chamber 1011 returns to the hydraulic system 104, the elastic member 1013 has an elastic force for pushing the first rod 1021 to return. The piston 10111 divides the cylinder chamber 1011 into a first chamber 10112 and a second chamber 10113, the first chamber 10112 communicates with the port 1012, and the elastic member 1013 is located in the second chamber 10113. Specifically, the elastic member 1013 is a spring 10131 and a disc spring 10132, and the spring 10131 and the disc spring 10132 are disposed around the first rod 1021 and arranged up and down.

The rod assembly 102 includes a first rod 1021 and a second rod 1022, the first rod 1021 is connected to the piston 10111 and is movable with respect to the cylinder 1015, an upper end of the first rod 1021 and a right end of the second rod 1022 are rotatably connected, a lower end of the first rod 1021 and a left end of the second rod 1022 are adapted to clamp the flange assembly 200 therebetween, and a distance between a lower end of the first rod 1021 and a left end of the second rod 1022 in an up-down direction of the first rod 1021 is adjustable to clamp the flange assembly 200 and release the flange assembly 200. The hydraulic system 104 is connected to the interface 1012, the hydraulic system 104 can supply oil to the cylinder chamber 1011 through the interface 1012 to drive the first rod 1021 to move relative to the cylinder 1015 so as to clamp the flange assembly 200, and the oil in the cylinder chamber 1011 can flow back to the hydraulic system 104 through the interface 1012 to drive the first rod 1021 to reset so as to release the flange assembly 200.

When the flange assembly 200 needs to be clamped and sealed, the hydraulic system 104 supplies oil to the cylinder chamber 1011 of the hydraulic cylinder 101 through the interface 1012 to drive the piston 10111 to drive the first rod 1021 to move, and simultaneously the first rod 1021 drives the second rod 1022 to link, so that the distance between the second end of the first rod 1021 and the second end of the second rod 1022 is reduced, and the upper end face and the lower end face of the flange assembly 200 can be clamped and sealed. When the flange hydraulic clamping device 100 needs to release the flange assembly 200, oil in the cylinder chamber 1011 can be discharged into the hydraulic system 104 through the interface 1012, so that the flange hydraulic clamping device 100 is depressurized, the distance between the second end of the first rod 1021 and the second end of the second rod 1022 is increased, the flange hydraulic clamping device 100 can be conveniently taken down from the flange assembly 200 by an operator, and the labor intensity of the operator is reduced. Meanwhile, the flange assembly 200 is rapidly clamped and released by the driving rod assembly 102 through the hydraulic system 104, so that the operation time of sealing the flange assembly 200 or releasing the flange assembly 200 can be shortened, the production efficiency of equipment is improved, and the production cost of polycrystalline silicon is reduced.

As shown in fig. 1, the first lever 1021 includes a first section 10211 and a second section 10212, a lower end of the first section 10211 is connected to an upper end of the second section 10212, a lower end of the first section 10211 is located in the second chamber 10113, and an upper end of the first section 10211 protrudes out of the cylinder 1015 and is rotatably connected to a right end of the second lever 1022; the upper end of the second segment 10212 is disposed in the first chamber 10112, and the lower end of the second segment 10212 extends out of the cylinder 1015 and is rotatably coupled to the mounting bracket 103. Specifically, the cross-sectional area of the first section 10211 is greater than the cross-sectional area of the second section 10212, and the piston 10111 is sleeved at the first end of the second section 10212 and is disposed in abutment with the first end face of the first section 10211. When the piston 10111 is subjected to oil pressure, the piston 10111 moves towards the first segment 10211, and when the piston 10111 moves to a step surface between the first segment 10211 and the second segment 10212, the piston 10111 drives the first rod 1021 to move synchronously, so that the piston 10111 and the first rod 1021 are linked.

As shown in fig. 1 to 3, the second lever 1022 further includes a connecting portion 1031 between left and right ends of the second lever 1022, and the flange hydraulic clamping device 100 further includes a mounting bracket 103, the mounting bracket 103 is rotatably connected to the connecting portion 1031, in other words, the second lever 1022 can rotate around the connecting portion 1031, and the rotation plane of the second lever 1022 is perpendicular to the flange assembly 200. The lower end of the mounting bracket 103 is provided with a support portion 1032, and the support portion 1032 is extended toward the left end in fig. 1, so that the flange assembly 200 is clamped between the left end of the second rod 1022 and the support portion 1032. The left end of the second lever 1022 includes a pressing plane 10221 facing the support 1032, and the support 1032 includes a support plane 10321 facing the pressing plane 10221. Therefore, when the flange hydraulic clamping device 100 clamps the flange assembly 200, the pressing plane 10221 and the supporting plane 10321 respectively abut against the end surfaces of the upper flange 201 and the lower flange 202, so that the contact area between the flange hydraulic clamping device 100 and the flange assembly 200 is increased, and the sealing performance of the flange assembly 200 is improved.

As shown in fig. 1, a limiting member 1023 is provided on the first rod 1021, and after the oil in the cylinder chamber 1011 flows back to the hydraulic system 104, the limiting member 1023 is used to limit the axial movement of the first rod 1021. In other words, after the cylinder chamber 1011 is depressurized, the first rod 1021 can be fixed by the limiting member 1023, so that the pre-tightening force of the hydraulic clamping device on the flange assembly 200 can be continuously maintained without the action of hydraulic pressure, and the problem that the hydraulic oil performance is deteriorated and finally the hydraulic system 104 fails due to the high temperature of the flange assembly 200 during the production operation of the polysilicon reduction furnace is avoided. Specifically, the limiting member 1023 is screwed to the lower end of the first rod 1021, and after the oil in the cylinder chamber 1011 flows back to the hydraulic system 104, the limiting member 1023 is rotated to move the limiting member 1023 downward, and the limiting member 1023 abuts against the mounting frame 103, so that the axial movement of the first rod 1021 is limited. When the flange hydraulic clamping device 100 needs to be detached from the flange assembly 200, oil is supplied to the cylinder chamber 1011 through the hydraulic system 104, when the oil pressure in the cylinder chamber 1011 reaches a certain threshold value, the pre-tightening force of the limiting member 1023 and the mounting block 103 can be offset, so that an operator can conveniently unscrew the limiting member 1023 and move upwards to separate the limiting member 1023 from the mounting block 103, and then oil in the cylinder chamber 1011 flows back to the hydraulic system 104, so that the flange hydraulic clamping device 100 is detached.

As shown in fig. 1, the hydraulic system 104 includes: a hydraulic pump 1041, a pressure relay 1042, a solenoid valve 1043, and a controller (not shown). The hydraulic pump 1041 can supply oil to the cylinder chamber 1011 through the interface 1012, and the hydraulic pump 1041, the pressure relay 1042, the electromagnetic valve 1043 are electrically connected with the controller, so that the controller controls the opening and closing of the hydraulic pump 1041 according to the pressure detected by the pressure relay 1042. When the hydraulic pump 1041 supplies oil to the cylinder chamber 1011 to reach a certain preset pressure value, the pressure relay 1042 transmits the oil to the controller in an electric signal manner, and the controller controls the pressure relay 1042 to act to drive the electromagnetic valve 1043 to close the hydraulic pump 1041, so that the hydraulic pump 1041 stops supplying oil. Therefore, manual intervention can be reduced, and automatic clamping and sealing of the flange hydraulic clamping device 100 to the flange assembly 200 can be realized.

As shown in fig. 8, there are a plurality of hydraulic cylinders 101 and rod assemblies 102, the plurality of hydraulic cylinders 101 and the plurality of rod assemblies 102 correspond to one another, and the plurality of hydraulic cylinders 101 are connected in series and communicated with the hydraulic system 104 through a flow pipe 10411, so that the plurality of hydraulic cylinders 101 and rod assemblies 102 are controlled by the single hydraulic system 104. A quick-pull plug 1014 is arranged at the joint of the interface 1012 and the oil pipeline 10411. After the flange assembly 200 is clamped and the hydraulic cylinder 101 is pressurized through the limiting part 1023, the hydraulic system 104 can be quickly separated from the hydraulic cylinder 101 through the quick-pull plug 1014, and the flexibility of the flange hydraulic clamping device 100 in use is improved.

A flange hydraulic clamping device 100 according to other specific examples of the present invention is described below with reference to the drawings.

As shown in fig. 4 and 8, the flange hydraulic clamping device 100 according to the embodiment of the present invention includes a hydraulic cylinder 101, a first rod 1021, a pin 10241, and a hydraulic system 104 (see fig. 1). The hydraulic cylinder 101 comprises a cylinder body 1015 and a piston 10111, a cylinder chamber 1011 is arranged in the cylinder body 1015, the piston 10111 is arranged in the cylinder chamber 1011, a connector 1012 is arranged on the cylinder body 1015, the connector 1012 is communicated with the cylinder chamber 1011, and oil liquid in the cylinder chamber 1011 is injected or discharged through the connector 1012.

As shown in fig. 4 to 7, an upper end of the first rod 1021 is connected to the piston 10111, the first rod 1021 and the cylinder 1015 can move relatively, the flange assembly 200 is clamped between a lower end of the first rod 1021 and the cylinder 1015, and a distance between the lower end of the first rod 1021 and the cylinder 1015 in an up-down direction of the first rod 1021 is adjustable to clamp the flange assembly 200 and release the flange assembly 200, that is, the first rod 1021 can extend and contract in the cylinder 1015 to clamp the flange assembly 200. The hydraulic system 104 is connected to the interface 1012, the hydraulic system 104 can supply oil to the cylinder chamber 1011 through the interface 1012 to drive the first rod 1021 to move relative to the cylinder 1015 so as to clamp the flange assembly 200, and the oil in the cylinder chamber 1011 can flow back to the hydraulic system 104 through the interface 1012 to drive the first rod 1021 to reset so as to release the flange assembly 200.

As shown in fig. 4 to 7, when the flange assembly 200 needs to be clamped and sealed, the hydraulic system 104 supplies oil to the cylinder chamber 1011 of the hydraulic cylinder 101 through the interface 1012 to drive the piston 10111 to move the first rod 1021, or drive the cylinder 1015 to move relative to the first rod 1021, so that the distance between the lower end of the first rod 1021 and the cylinder 1015 is reduced, and the upper and lower end surfaces of the flange assembly 200 can be clamped and sealed. When the flange hydraulic clamping device 100 needs to release the flange assembly 200, oil in the cylinder chamber 1011 can be discharged into the hydraulic system 104 through the interface 1012, so that the flange hydraulic clamping device 100 is depressurized, the distance between the lower end of the first rod 1021 and the cylinder 1015 is increased, the flange hydraulic clamping device 100 can be conveniently taken down from the flange assembly 200 by an operator, and the labor intensity of the operator is reduced. Meanwhile, the hydraulic system 104 drives the first rod 1021 to rapidly clamp and release the flange assembly 200, so that the operation time for sealing the flange assembly 200 or releasing the flange assembly 200 can be shortened, the production efficiency of equipment is improved, and the production cost of polycrystalline silicon is reduced.

As shown in fig. 4 and 5, the lower end of the first lever 1021 is provided with a pin hole 1024, and the pin 10241 may be fitted in the pin hole 1024 to position the lower end of the first lever 1021. Specifically, by inserting the first rod 1021 into the axial hole of the flange assembly 200, the hydraulic system 104 supplies oil into the cylinder chamber 1011 of the hydraulic cylinder 101 through the interface 1012 to drive the piston 10111 to move the first rod 1021, or to drive the first rod 1021 and the cylinder 1015 to move relatively, so that the distance between the lower end of the first rod 1021 and the cylinder 1015 is reduced. In other words, the upper and lower end surfaces of the flange assembly 200 are engaged with the pin 10241 through a side of the cylinder 1015 adjacent to the lower end of the first lever 1021 to clamp the flange assembly 200.

One side of the lower flange 202 of the flange assembly 200 is provided with a flange rib plate 2021, the flange rib plate 2021 is provided with a positioning hole 20211, and when the hydraulic cylinder 101 drives the first rod 1021 to extend downwards, the pin shaft hole 1024 can coincide with the positioning hole 20211.

Alternatively, as shown in fig. 4 and 5, when clamping the flange assembly 200, the hydraulic cylinder 101 is disposed on the upper end surface of the flange assembly 200 and is kept still, then the first rod 1021 is inserted into the shaft hole of the flange assembly 200, the hydraulic cylinder 101 drives the first rod 1021 to extend downward until the pin shaft hole 1024 on the first rod 1021 moves downward and coincides with the positioning hole 20211 of the flange rib 2021, and then the pin 10241 is inserted into the pin shaft hole 1024, so that the upper flange 201 and the lower flange 202 have a mutual pre-tightening force therebetween.

Further, as shown in fig. 4 and 5, an elastic member 1013 is installed in the cylinder chamber 1011, and after the oil in the cylinder chamber 1011 returns to the hydraulic system 104, the elastic member 1013 has an elastic force that pushes the first rod 1021 to return. The elastic member 1013 is a spring 10131 and a disc spring 10132, and the spring 10131 and the disc spring 10132 are disposed around the first rod 1021 and arranged up and down. Thus, after the oil in the cylinder chamber 1011 returns to the hydraulic system 104, the elastic member 1013 tends to drive the first rod 1021 in the return direction, so that the cylinder 1015 has the pre-tightening force of the sealing flange assembly 200 between the side adjacent to the lower end of the first rod 1021 and the pin 10241. In other words, after the hydraulic cylinder 101 is depressurized, the flange hydraulic clamping device 100 can continuously maintain the pre-tightening force of the flange hydraulic clamping device 100 on the flange assembly 200 without the action of hydraulic pressure, so as to avoid the problem that the hydraulic oil performance deteriorates at high temperature and finally causes a fault of the hydraulic system 104 due to the temperature rise of the flange assembly 200 during the production operation of the polycrystalline silicon reduction furnace.

Alternatively, as shown in fig. 6 and 7, when clamping the flange assembly 200, the pin hole 1024 of the first rod 1021 and the positioning hole 20211 on the flange rib plate 2021 are overlapped, and then the pin 102411 is inserted into the pin hole 1024 and the positioning hole 20211, that is, the lower end of the first rod 1021 needs to be fixed to limit the movement of the first rod 1021, and then the hydraulic system 104 supplies oil to the cylinder chamber 1011, so that the piston 10111 is fixedly connected to the first rod 1021, and thus the hydraulic oil can push the piston 10111 and drive the upper end of the first rod 1021 to move upward relative to the cylinder 1015.

Further, an elastic member 1013 is installed in the cylinder chamber 1011, and after the oil in the cylinder chamber 1011 returns to the hydraulic system 104, the elastic member 1013 has an elastic force that pushes the cylinder 1015 to return. In other words, after the hydraulic cylinder 101 is depressurized, the elastic member 1013 pushes the cylinder 1015 to move upward, so that the contact surface between the hydraulic cylinder 101 and the flange assembly 200 is disengaged, thereby facilitating the disassembling work of the flange hydraulic clamping device 100 by an operator.

As shown in fig. 6 and 7, the piston 10111 divides the cylinder chamber 1011 into a first chamber 10112 and a second chamber 10113, the first chamber 10112 is located at a lower side of the piston 10111, the second chamber 10113 is located at an upper side of the piston 10111, the first chamber 10112 communicates with the port 1012, and the elastic member 1013 is located in the second chamber 10113. Optionally, the elastic member 1013 is a spring 10131 and a disc spring 10132, and the spring 10131 and the disc spring 10132 are disposed around the first rod 1021 and arranged up and down. The piston 10111 is provided with a groove 101111, and the groove 101111 is positioned at the upper end of the piston 10111 in fig. 6. One end of the elastic member 1013 abuts against the bottom surface of the groove 101111, and the other end of the elastic member 1013 abuts against the cylinder 1015, that is, the piston 10111 is disposed in the area enclosed by the groove 101111 and the cylinder 1015, and the elastic member 1013 is located in the second chamber 10113 so as not to contact with the oil, thereby prolonging the service life of the elastic member 1013. Further, a boss 101121 facing the piston 10111 is arranged in the first chamber 10112, after the oil liquid in the cylinder chamber 1011 flows back to the hydraulic system 104, the piston 10111 abuts against the boss 101121, so that after the pressure of the cylinder 1015 is relieved, the cavity in the second chamber 10113 is not zero, and further, the subsequent oil liquid is conveniently injected into the second chamber 10113.

As shown in fig. 1, the hydraulic system 104 includes: a hydraulic pump 1041, a pressure relay 1042, a solenoid valve 1043, and a controller (not shown). The hydraulic pump 1041 can supply oil to the cylinder chamber 1011 through the interface 1012, and the hydraulic pump 1041, the pressure relay 1042, the electromagnetic valve 1043 are electrically connected with the controller, so that the controller controls the opening and closing of the hydraulic pump 1041 according to the pressure detected by the pressure relay 1042. When the hydraulic pump 1041 supplies oil to the cylinder chamber 1011 to reach a certain preset pressure value, the pressure relay 1042 transmits the oil to the controller in an electric signal manner, and the controller controls the pressure relay 1042 to act to drive the electromagnetic valve 1043 to close the hydraulic pump 1041, so that the hydraulic pump 1041 stops supplying oil. Therefore, manual intervention can be reduced, and automatic clamping and sealing of the flange hydraulic clamping device 100 to the flange assembly 200 can be realized.

As shown in fig. 8, there are a plurality of hydraulic cylinders 101 and rod assemblies 102, the plurality of hydraulic cylinders 101 and the plurality of rod assemblies 102 correspond to one another, and the plurality of hydraulic cylinders 101 are connected in series and communicated with the hydraulic system 104 through a flow pipe 10411, so that the plurality of hydraulic cylinders 101 and rod assemblies 102 are controlled by the single hydraulic system 104. A quick-pull plug 1014 is arranged at the joint of the interface 1012 and the oil pipeline 10411. After the flange assembly 200 is clamped and the hydraulic cylinder 101 is pressurized through the limiting part 1023, the hydraulic system 104 can be quickly separated from the hydraulic cylinder 101 through the quick-pull plug 1014, and the flexibility of the flange hydraulic clamping device 100 in use is improved.

According to the utility model discloses polycrystalline silicon reduction furnace includes the flange hydraulic clamping device 100 and the flange subassembly 200 of any one of above-mentioned embodiment, and the flange includes upper flange 201 and lower flange 202, and the furnace mouth department of polycrystalline silicon reduction furnace is located to lower flange 202, and upper flange 201 cooperates with the furnace mouth of sealed polycrystalline silicon reduction furnace with lower flange 202. The flange hydraulic clamping device 100 is provided in plurality and distributed at equal intervals along the circumferential direction of the flange assembly 200. The flange hydraulic clamping device of the embodiment of the application can replace a traditional bolt pre-tightening mode to clamp the flange assembly 200. According to the polycrystalline silicon reduction furnace provided by the embodiment of the application, the flange assembly 200 is rapidly clamped and released by the driving rod assembly 102 through the hydraulic system 104, so that the operation time of sealing the flange assembly 200 or releasing the flange assembly 200 can be shortened, the production efficiency of the polycrystalline silicon reduction furnace is improved, and the production cost of polycrystalline silicon is reduced.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (19)

1. A flange hydraulic clamping device, comprising:

the hydraulic cylinder comprises a cylinder body and a piston, a cylinder chamber is arranged in the cylinder body, a connector is arranged on the cylinder body and communicated with the cylinder chamber, and the piston is arranged in the cylinder chamber;

a rod assembly connected to the piston and movable relative to the cylinder, the flange assembly being adapted to be clamped between one portion of the rod assembly and another portion of the rod assembly or between the rod assembly and the cylinder;

the hydraulic system is connected with the interface, the hydraulic system can supply oil to the cylinder chamber through the interface to drive the rod assembly and the cylinder body to move relatively so as to clamp the flange assembly, and oil in the cylinder chamber can flow back to the hydraulic system through the interface to drive the rod assembly or the cylinder body to reset so as to release the flange assembly.

2. The flange hydraulic clamping device of claim 1,

the rod assembly comprises a first rod and a second rod, the first rod is connected with the piston and is movable relative to the cylinder body, a first end of the first rod is connected with a first end of the second rod, a second end of the first rod and a second end of the second rod are suitable for clamping the flange assembly, the distance between the second end of the first rod and the second end of the second rod in the length direction of the first rod is adjustable for clamping the flange assembly and releasing the flange assembly,

the hydraulic system can supply oil into the cylinder chamber through the interface to drive the first rod to move relative to the cylinder body so as to clamp the flange assembly, and oil in the cylinder chamber can flow back into the hydraulic system through the interface to drive the first rod to reset so as to release the flange assembly.

3. The flange hydraulic clamping device of claim 2, wherein the first end of the first lever and the first end of the second lever are rotatably connected, the second lever further comprising a connecting portion between the first end of the second lever and the second end of the second lever,

the flange hydraulic clamping device further comprises a mounting frame, the mounting frame is rotatably connected with the connecting portion, a supporting portion is arranged on the mounting frame and is close to the second end of the first rod, and the second end of the second rod and the supporting portion are suitable for clamping the flange assembly.

4. The flange hydraulic clamping device of claim 3, wherein the second end of the second rod includes a pressing plane toward the support portion, and the support portion includes a support plane toward the pressing plane.

5. The flange hydraulic clamping device according to claim 3, wherein a limiting member is provided on the first rod, and the limiting member is configured to limit the axial movement of the first rod after the oil in the cylinder chamber flows back to the hydraulic system.

6. The flange hydraulic clamping device according to claim 5, wherein the retainer is threadedly attached to the second end of the first rod, and abuts against the mounting bracket to restrict axial movement of the first rod after oil in the cylinder chamber returns to the hydraulic system.

7. The flange hydraulic clamping device according to claim 3, wherein a resilient member is installed in the cylinder chamber, and the resilient member has a resilient force urging the first rod to return after oil in the cylinder chamber returns to the hydraulic system.

8. The flange hydraulic clamping device of claim 7, wherein the piston divides the cylinder chamber into a first chamber and a second chamber, the first chamber communicating with the port, the resilient member being located within the second chamber.

9. The flange hydraulic clamping device according to claim 8, wherein the first rod includes a first section and a second section, a first end of the first section is connected to a first end of the second section, the first end of the first section is located in the second chamber, and a second end of the first section extends out of the cylinder and is rotatably connected to a first end of the second rod; the first end of the second section is arranged in the first chamber, and the second end of the second section extends out of the cylinder body and is rotatably connected with the mounting frame.

10. The flange hydraulic clamping device of claim 1,

the rod assembly comprises a first rod, a first end of the first rod is connected with the piston, the first rod and the cylinder body can move relatively, a flange assembly is suitable to be clamped between a second end of the first rod and the cylinder body, the distance between the second end of the first rod and the cylinder body in the length direction of the first rod is adjustable to clamp the flange assembly and release the flange assembly,

the hydraulic system can supply oil to the cylinder chamber through the interface to drive the first rod and the cylinder body to move relatively so as to clamp the flange assembly, and oil in the cylinder chamber can flow back to the hydraulic system through the interface to drive the first rod or the cylinder body to reset so as to release the flange assembly.

11. The hydraulic flange clamping device of claim 10, wherein the lever assembly further includes a pin shaft, the second end of the first lever having a pin shaft bore, the pin shaft being engageable within the pin shaft bore to locate the second end of the first lever.

12. The hydraulic flange clamping device of claim 11, wherein the first rod is movable relative to the cylinder, the piston drives the first rod to move in a direction away from the cylinder when the hydraulic system supplies oil to the cylinder chamber such that the second end of the first rod and the cylinder clamp the flange assembly, and the pin is engageable within the pin bore to limit movement of the first rod when the second end of the first rod and the cylinder clamp the flange assembly.

13. The flange hydraulic clamping device according to claim 12, wherein a resilient member is installed in the cylinder chamber, and the resilient member has a resilient force urging the first rod to return after oil in the cylinder chamber returns to the hydraulic system.

14. The flange hydraulic clamping device according to claim 11, wherein the pin is fitted in the pin hole to restrict movement of the first rod, and the hydraulic system drives the cylinder body to move relative to the first rod in a direction toward the pin when the hydraulic system supplies oil to the cylinder chamber.

15. The flange hydraulic clamping device according to claim 14, wherein a resilient member is installed in the cylinder chamber, and the resilient member has a resilient force for urging the cylinder body to return after oil in the cylinder chamber returns to the hydraulic system.

16. The flange hydraulic clamping device according to claim 7, 13 or 15, wherein the elastic member is at least one of a spring and a disc spring.

17. The flange hydraulic clamping device of claim 1, wherein the hydraulic system comprises:

a hydraulic pump which can supply oil to the cylinder chamber through the interface;

the pressure relay is used for detecting the oil pressure in the cylinder chamber;

and the controller is connected with the pressure relay and the hydraulic pump so as to control the hydraulic pump according to the pressure detected by the pressure relay.

18. The hydraulic flange clamping device according to any one of claims 1-15 and 17, wherein the hydraulic cylinders and the rod assemblies are multiple, the multiple hydraulic cylinders and the multiple rod assemblies are in one-to-one correspondence, and the multiple hydraulic cylinders are connected in series with each other through a oil delivery pipe and are communicated with the hydraulic system.

19. A polysilicon reduction furnace, comprising:

a flange assembly;

flange hydraulic clamping device according to any one of claims 1 to 18 for clamping the flange assembly.

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