Double-roller machine shaft roller structure provided with circulating cooling loop

Abstract

The double-roller machine shaft roller structure comprises a shaft roller, a cooling water input pipe and a first end cover, bearing supporting sections are arranged at the two ends of a roller shaft, and the shaft roller is provided with a cooling cavity penetrating from the end face of one end of the shaft roller to the interior of the bearing supporting section at the other end of the shaft roller. The cooling cavity forms a cooling cavity opening in the end face of one end of the shaft roller, the first end cover is connected to the cooling cavity opening in a sealed mode, a cooling liquid backflow cavity is formed in the end face of the end, facing the cooling cavity, of the first end cover, and the cooling liquid backflow cavity is provided with a cooling liquid inlet and a cooling liquid outlet. One end of the cooling water input pipe is located in the bearing supporting section at the other end of the shaft roller, the other end of the cooling water input pipe is connected with the cooling liquid inlet in a sealed mode, a cooling liquid backflow channel is formed between the cooling water input pipe and the side wall of the cooling liquid backflow cavity, and the cooling liquid backflow channel communicates with the cooling cavity and the cooling liquid outlet. The sand making machine bearing cooling device has the advantage that the bearing can be cooled, and the problem that an existing sand making machine bearing cannot be fully cooled is solved.

Description

Technical Field

[0001] The invention relates to the technical field of roller sand making machines, in particular to a roller shaft roller structure with a circulating cooling loop. Background Art

[0002] Roller sand making machines usually include fixed rollers and movable rollers. The material is fed from above the two rollers, and is continuously brought between the rollers by the squeezing rollers, and discharged from the bottom of the machine with an ideal particle size. The stone is crushed into sand by the relative movement of the two rollers. In the Chinese patent literature, patent number CN202021220681X was authorized and announced on April 13, 2021. The application includes a vertical frame, a first rolling roller, a second rolling roller and a drive motor. A rolling channel is formed between the first rolling roller and the second rolling roller. The first rolling roller is rotatably connected to the frame, and the drive motor is connected to the frame. The drive motor is used to drive the first rolling roller to rotate. The frame is provided with a number of support feet, and the support feet include a bottom plate, a lifting plate, a top plate and a column arranged in sequence from bottom to top, and a positioning ring is provided on the bottom plate. The shortcoming of the roller sand making machine in the prior art is that the inner ring of the bearing cannot be cooled by circulating cooling. Summary of the invention

[0003] The present invention aims to provide a roller structure of a roller machine with a circulating cooling circuit capable of cooling bearings, thereby solving the problem that the existing sand making machine bearings cannot be fully cooled.

[0004] The above technical problems are solved by the following technical solutions: a roller structure of a roller machine with a circulating cooling circuit, comprising a roller, bearing support sections are arranged at both ends of the roller shaft, and the structure is characterized in that it also comprises a cooling water inlet pipe and a first end cover, the roller is provided with a cooling cavity that passes from the end face of one end of the roller to the bearing support section at the other end of the roller, the cooling cavity forms a cooling cavity opening on the end face of one end of the roller, the first end cover is sealingly connected to the cooling cavity opening, a cooling liquid reflux cavity is arranged on the end face of the first end cover facing one end of the cooling cavity, the cooling liquid reflux cavity is provided with a cooling liquid inlet and a cooling liquid outlet, one end of the cooling water inlet pipe is located in the part of the cooling cavity located in the bearing support section at the other end of the roller, the other end is penetrated in the cooling liquid reflux cavity and is sealingly connected to the cooling liquid inlet, a cooling liquid reflux channel is formed between the cooling water inlet pipe and the side wall of the cooling liquid reflux cavity, and the cooling liquid reflux channel connects the cooling cavity and the cooling liquid outlet. When in use, cooling water is input into the cooling water input pipe from the cooling liquid inlet, flows out from the part of the cooling water input pipe located in the bearing support section at the other end of the shaft roller to reach the cooling cavity, enters the cooling liquid return channel from the cooling cavity, and finally flows out from the cooling liquid outlet. The above circulation of the coolant realizes the cooling of the shaft roller, especially the bearing support section, and thus cools the bearings connected to the support section from top to bottom. A true cooling cycle is realized.

[0005] Preferably, the cooling cavity is provided with a positioning hole in the portion located in the other end of the shaft roller, and the other end of the cooling water inlet pipe is inserted into the positioning hole so that the cooling water inlet pipe is suspended in the cooling cavity. This enables the cooling water to reflux evenly, realizes even cooling of all circumferential parts of the bearing support section, and even cooling of the bearing.

[0006] Preferably, it further comprises a positioning sleeve, the inner space of which constitutes the positioning hole, the cooling cavity passes through the end surface of the other end of the shaft roller to form an external port, the opening area of ​​the inner end of the external port is larger than the opening area of ​​the end of the cooling cavity connected to the external port to form a first limiting step, the positioning sleeve is inserted into the inner end of the external port and is limited in the external port by the first limiting step, and the external port is sealed and connected with a second end cap. The positioning hole can be conveniently and accurately made.

[0007] Preferably, the opening area of ​​the outer end of the outer port is larger than the opening area of ​​the inner end of the outer port to form an outer port connection step, the second end cover is provided with a small diameter section penetrating the inner end of the outer port, the second end cover is threadedly connected to the outer port connection step after the second end cover connecting bolt passes through the second end cover, and the small diameter section is sealed and connected to the inner end of the outer port through the second end cover sealing ring. The structure is compact, the connection is reliable, and accurate positioning and alignment can be easily achieved.

[0008] Preferably, the outer end of the cooling cavity opening is provided with a cooling cavity opening large diameter section to form a cooling cavity opening connection step, the first end cover is inserted into the cooling cavity opening large diameter section, the first end cover is threadedly connected to the cooling cavity opening connection step after the first end cover first connection bolt passes through the outer end cover, and the cooling cavity opening connection step is provided with a first end cover first sealing ring that seals the first end cover and the cooling cavity opening connection step together. The connection is reliable, the positioning is accurate, and the structure is compact.

[0009] Preferably, the first end cover comprises a connecting tube and a connecting ring which is detachably connected to the connecting tube in a sealed manner, the connecting ring is inserted into the large diameter section of the opening of the cooling cavity, the coolant inlet and the coolant outlet are arranged with the connecting tube, and the outer diameter of the connecting tube is smaller than the outer diameter of the connecting ring. It can be easily manufactured and has a compact structure.

[0010] Preferably, the outer circumferential surface of the connecting tube is provided with an escape ring groove extending along the circumferential direction of the connecting tube, the escape ring groove isolates a connecting flange on the connecting tube, the connecting flange is threadedly connected to the connecting ring after the second connecting bolt of the first end cover passes through the connecting flange, and the connecting tube is connected to the connecting ring together, and the second sealing ring of the first end cover is provided between the connecting ring and the connecting flange to seal the connecting flange and the connecting ring together. The connection is convenient and material saving.

[0011] Preferably, a large diameter section of a connecting ring is provided on the inner circumference of one end of the connecting ring connected to the connecting tube, the large diameter section of the connecting ring forms a connecting step of the connecting ring on the inner circumference of the connecting ring, the connecting flange is provided with a positioning protrusion penetrating in the large diameter section of the connecting ring, and the second sealing ring of the first end cover is pressed on the connecting step of the connecting ring through the positioning protrusion to realize the sealing connection between the connecting tube and the connecting ring. The sealing is convenient and reliable.

[0012] Preferably, the opening area of ​​the cooling cavity gradually increases from the end where the outlet end of the cooling water inlet pipe is located toward the other end. When the temperature of the coolant decreases, the heat exchange area increases, thereby improving the uniformity of cooling.

[0013] The beneficial effect of the present invention is that the cooling water can be fully circulated to fully cool the bearing support sections at both ends of the shaft roller, thereby cooling the bearings from top to bottom. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a cross-sectional schematic diagram of embodiment 1 of the present invention; Figure 2 for Figure 1 A local enlarged schematic diagram of point A; Figure 3 for Figure 1 A local enlarged schematic diagram of point B; Figure 4 This is a schematic diagram of Embodiment 2 of the present invention.

[0015] In the figure: shaft roller 1, cooling water inlet pipe 2, first end cover 3, bearing support section 4, cooling cavity 5, cooling cavity opening 6, coolant inlet 7, coolant outlet 8, one end of cooling water inlet pipe 9, liquid outlet 10, coolant reflux channel 11, positioning hole 12, positioning sleeve 13, second end cover 14, small diameter section 15, second end cover connecting bolt 16, second end cover sealing ring 17, connecting tube 18, connecting ring 19, first end cover part first connecting bolt 20, first end cover part first sealing ring 21, avoidance ring groove 22, connecting flange 23, first end cover part second connecting bolt 24, first end cover part second sealing ring 25, positioning protrusion 26, external port 27. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] Example 1, see Figures 1 to 3 A roller structure of a roller machine with a circulating cooling circuit includes a roller 1, a cooling water inlet pipe 2 and a first end cover 3. Bearing support sections 4 are provided at both ends of the roller shaft. The roller is provided with a cooling cavity 5 that passes from the end face of one end of the roller to the bearing support section at the other end of the roller. The cooling cavity forms a cooling cavity opening 6 on the end face of one end of the roller, and the first end cover is sealed and connected to the cooling cavity opening. A coolant reflux cavity is provided on the end face of the first end cover facing one end of the cooling cavity. The coolant reflux cavity is provided with a coolant inlet 7 and a coolant outlet 8. One end 9 of the cooling water inlet pipe is located in the portion of the cooling cavity located in the bearing support section at the other end of the roller and is provided with a liquid outlet 10 on the circumferential surface. The other end is penetrated in the coolant reflux cavity and is sealed and connected with the coolant inlet. A coolant reflux channel 11 is formed between the cooling water inlet pipe and the side wall of the coolant reflux cavity. The coolant reflux channel connects the cooling cavity and the coolant outlet. When in use, cooling water is input into the cooling water input pipe from the cooling liquid inlet, flows out from the part of the cooling water input pipe located in the bearing support section at the other end of the shaft roller to reach the cooling cavity, enters the cooling liquid return channel from the cooling cavity, and finally flows out from the cooling liquid outlet. The above circulation of the coolant realizes the cooling of the shaft roller, especially the bearing support section, and thus cools the bearing connected to the support section up and down.

[0018] The cooling cavity is provided with a positioning hole 12 in the part located in the other end of the shaft roller, and the other end of the cooling water inlet pipe is inserted into the positioning hole so that the cooling water inlet pipe is suspended in the cooling cavity. It also includes a positioning sleeve 13, the internal space of which constitutes a positioning hole, the cooling cavity passes through the end surface of the other end of the shaft roller to form an external port 27, the opening area of ​​the inner end of the external port is larger than the opening area of ​​the cooling cavity connected to the end of the external port to form a first limiting step, the positioning sleeve is inserted into the inner end of the external port and is limited in the external port by the first limiting step, and the external port is sealed with a second end cover 14. The opening area of ​​the outer end of the external port is larger than the opening area of ​​the inner end of the external port to form an external port part connection step, the second end cover is provided with a small diameter section 15 inserted in the inner end of the external port, the second end cover is threadedly connected to the external port part connection step after passing through the second end cover by a second end cover connecting bolt 16, and the small diameter section is sealed and connected in the inner end of the external port by a second end cover sealing ring 17.

[0019] The outer end of the cooling cavity opening is provided with a large diameter section of the cooling cavity opening to form a connecting step of the cooling cavity opening. The first end cover includes a connecting tube 18 and a connecting ring 19 that is sealed and detachably connected to the connecting tube. The connecting ring is inserted into the large diameter section of the cooling cavity opening, and the coolant inlet and the coolant outlet are arranged on the connecting tube. The outer diameter of the connecting tube is smaller than the outer diameter of the connecting ring. The connection is also made by passing through the outer end cover through the first connecting bolt 20 of the first end cover and then threading it on the connecting step of the cooling cavity opening. The connecting step of the cooling cavity opening is provided with a first sealing ring 21 of the first end cover that seals the connecting ring with the connecting step of the cooling cavity opening. An avoidance ring groove 22 extending along the circumference of the connecting tube is provided on the outer peripheral surface of the connecting tube. The avoidance ring groove isolates a connecting flange 23 on the connecting tube. The connecting flange is threadedly connected to the connecting ring through the second connecting bolt 24 of the first end cover through the connecting flange to connect the connecting tube with the connecting ring. A second sealing ring 25 of the first end cover that seals the connecting flange with the connecting ring is provided between the connecting ring and the connecting flange. A connecting ring large diameter section is provided on the inner circumference of one end of the connecting ring connected to the connecting tube, and a connecting ring connecting step is formed on the inner circumference of the connecting ring by the connecting ring large diameter section. The connecting flange is provided with a positioning protrusion 26 penetrating through the connecting ring large diameter section. The second sealing ring of the first end cover is pressed on the connecting step of the connecting ring by the positioning protrusion to realize a sealed connection between the connecting tube and the connecting ring.

[0020] Embodiment 2 is different from Embodiment 1 in that: See also Figure 4 The opening area of ​​the cooling cavity gradually increases from the end where the outlet end of the cooling water inlet pipe is located toward the other end.

[0021] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0022] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A roller structure of a roller machine with a circulating cooling circuit, comprising a roller, and bearing support sections are provided at both ends of the roller shaft, characterized in that: It also includes a cooling water inlet pipe and a first end cover, the shaft roller is provided with a cooling cavity which passes from the end face of one end of the shaft roller to the bearing support section at the other end of the shaft roller, the cooling cavity forms a cooling cavity opening on the end face of one end of the shaft roller, the first end cover is sealingly connected to the cooling cavity opening, a cooling liquid reflux cavity is provided on the end face of the first end cover facing one end of the cooling cavity, the cooling liquid reflux cavity is provided with a cooling liquid inlet and a cooling liquid outlet, one end of the cooling water inlet pipe is located in the part of the cooling cavity located in the bearing support section at the other end of the shaft roller, the other end is penetrated in the cooling liquid reflux cavity and is sealingly connected to the cooling liquid inlet, a cooling liquid reflux channel is formed between the cooling water inlet pipe and the side wall of the cooling liquid reflux cavity, the cooling liquid reflux channel connects the cooling cavity and the cooling liquid outlet.

2. The roller structure with a circulating cooling circuit according to claim 1 is characterized in that: The portion of the cooling cavity located inside the other end of the shaft roller is provided with a positioning hole, and the other end of the cooling water inlet pipe is inserted into the positioning hole so that the cooling water inlet pipe is suspended in the cooling cavity.

3. The roller structure with a circulating cooling circuit according to claim 2 is characterized in that: It also includes a positioning sleeve, the internal space of the positioning sleeve constitutes the positioning hole, the cooling cavity passes through the end face of the other end of the shaft roller to form an external port, the opening area of ​​the inner end of the external port is larger than the opening area of ​​the end of the cooling cavity connected to the external port to form a first limiting step, the positioning sleeve is inserted into the inner end of the external port and is limited in the external port by the first limiting step, and the external port is sealed and connected with a second end cover.

4. The roller structure with a circulating cooling circuit according to claim 3 is characterized in that: The opening area of ​​the outer end of the external port is larger than the opening area of ​​the inner end of the external port to form an outer port connecting step. The second end cover is provided with a small diameter section penetrating into the inner end of the external port. The second end cover is threadedly connected to the outer port connecting step after the second end cover connecting bolt passes through the second end cover. The small diameter section is sealed and connected to the inner end of the external port through the second end cover sealing ring.

5. The roller structure with a circulating cooling circuit according to claim 1, 2, 3 or 4, characterized in that: The outer end of the cooling chamber opening is provided with a large diameter section of the cooling chamber opening to form a cooling chamber opening connecting step, the first end cover is inserted into the large diameter section of the cooling chamber opening, the first end cover is threadedly connected to the cooling chamber opening connecting step after passing through the outer end cover by a first connecting bolt of the first end cover, and the cooling chamber opening connecting step is provided with a first sealing ring of the first end cover that seals the first end cover and the cooling chamber opening connecting step together.

6. The roller structure with a circulating cooling circuit according to claim 5, characterized in that: The first end cover includes a connecting tube and a connecting ring which is sealed and detachably connected to the connecting tube, the connecting ring is inserted into the large diameter section of the cooling chamber opening, the coolant inlet and the coolant outlet are arranged on the connecting tube, and the outer diameter of the connecting tube is smaller than the outer diameter of the connecting ring.

7. The roller structure with a circulating cooling circuit according to claim 6, characterized in that: An escape ring groove extending along the circumferential direction of the connecting tube is provided on the outer circumferential surface of the connecting tube, and the escape ring groove isolates a connecting flange on the connecting tube. The connecting flange is threadedly connected to the connecting ring after the second connecting bolt of the first end cover passes through the connecting flange to connect the connecting tube with the connecting ring. A second sealing ring of the first end cover is provided between the connecting ring and the connecting flange to seal the connecting flange with the connecting ring.

8. The roller structure with a circulating cooling circuit according to claim 7, characterized in that: A connecting ring large diameter section is provided on the inner circumferential surface of one end of the connecting ring connected to the connecting tube, and the connecting ring large diameter section forms a connecting ring connecting step on the inner circumferential surface of the connecting ring. The connecting flange is provided with a positioning protrusion penetrated through the connecting ring large diameter section, and the second sealing ring of the first end cover is pressed on the connecting step of the connecting ring through the positioning protrusion to achieve a sealed connection between the connecting tube and the connecting ring.

9. The roller structure with a circulating cooling circuit according to claim 1, 2, 3 or 4, characterized in that: The opening area of ​​the cooling cavity gradually increases from the end where the outlet end of the cooling water inlet pipe is located toward the other end.

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