CN212856022U

CN212856022U - Horizontal sand mill

Info

Publication number: CN212856022U
Application number: CN202021162003.2U
Authority: CN
Inventors: 侯福新
Original assignee: Beijing Agron Bio Pharm Co ltd
Current assignee: Beijing Agron Bio Pharm Co ltd
Priority date: 2020-06-20
Filing date: 2020-06-20
Publication date: 2021-04-02
Anticipated expiration: 2030-06-20

Abstract

The application relates to the technical field of sand mills, in particular to a horizontal sand mill which comprises a case, a grinding cylinder, a grinding device and a cooling water device, wherein the grinding cylinder comprises a grinding cylinder body, the grinding cylinder body is horizontally and fixedly connected to the case, and a feeding hole and a discharging hole are formed in the grinding cylinder body; one end of the grinding device (3) horizontally extends into the grinding cylinder body and is rotatably supported on the grinding cylinder body and the case; the grinder includes that one end open-ended hollow axis of rotation, rigid coupling are in hollow epaxial grinding blade of rotation and be used for ordering about hollow axis of rotation pivoted driving piece, the cooling water device includes inlet tube and water outlet device, the inlet tube intercommunication has the water source and stretches into in the hollow axis of rotation, water outlet device is fixed in the case and rotates the intercommunication with hollow axis of rotation open end. This application has the effect to the axis of rotation and the internal cooling of grinding blade axle, and from interior to exterior cools off the material in the grinding barrel, and the cooling is more even.

Description

Horizontal sand mill

Technical Field

The utility model belongs to the technical field of the sand mill technique and specifically relates to a horizontal sand mill is related to.

Background

The sand mill is the most extensive, the most advanced, the most efficient grinding equipment of material adaptability at present, and the grinding chamber is narrowest, and the driving lever clearance is minimum, and the grinding energy is the most intensive, cooperates cooling system and the automatic control system of high performance, can realize the continuous processing of material and discharge in succession, very big improvement production efficiency, the sand mill can produce a large amount of heats in the course of the work, in order to guarantee that the sand mill normally works, must cool off, the usual method is to let in the cooling water and take away the heat.

Chinese utility model patent with publication number CN202377049U discloses a forced cooling sand mill, which comprises a power output member, a grinding cylinder and a main shaft, wherein one end of the main shaft is hermetically sleeved with the grinding cylinder through a bearing, the other end of the main shaft is connected with the power output member, and the main shaft is further fixedly provided with blades; the grinding cylinder outer wall is provided with a cylinder interlayer for cooling water circulation, the cylinder interlayer is provided with a cylinder interlayer inlet and a cylinder interlayer outlet, the spindle outer wall is also provided with a spindle interlayer for cooling water circulation, and the spindle interlayer outer end is provided with a spindle interlayer inlet and a spindle interlayer outlet. When the cooling device is used, the main shaft and the blades generate a large amount of heat, and cooling water cools the interior of the charging barrel through a barrel interlayer arranged on the outer wall of the charging barrel.

In view of the above-mentioned related art, the cooling water is disposed on the outer wall of the charging barrel, and is far away from the spindle and the blades which generate heat, and meanwhile, the cooling water has a large contact area with the outside of the barrel, so that it is easier to absorb heat outside the barrel.

SUMMERY OF THE UTILITY MODEL

In order to more efficiently cool during grinding, the present application provides a horizontal sand mill.

The application provides a horizontal sand mill adopts following technical scheme:

a horizontal sand mill comprises a case, a grinding cylinder, a grinding device and a cooling water device, wherein the grinding cylinder comprises a grinding cylinder body which is horizontally and fixedly connected to the case, and a feed inlet and a discharge outlet are formed in the grinding cylinder body; grinder one end level is stretched into and is ground in the stack shell and rotate and support on grinding stack shell and quick-witted case, and grinder includes one end open-ended hollow axis of rotation, rigid coupling in hollow axis of rotation epaxial grinding blade and is used for ordering about hollow axis of rotation pivoted driving piece, the cooling water device includes inlet tube and water outlet device, the inlet tube intercommunication has the water source and stretches into in the hollow axis of rotation, water outlet device is fixed in the quick-witted case and rotates the intercommunication with hollow axis of rotation open end.

Through adopting above-mentioned technical scheme, hollow axis of rotation drives the grinding material of grinding blade in to grinding barrel body and grinds, and simultaneously, inside the cooling water got into hollow axis of rotation through the inlet tube, carries out high-efficient cooling to hollow axis of rotation and grinding blade to carry out even cooling through hollow axis of rotation outer wall and grinding blade to the material in the grinding barrel. Compared with the prior art, the hollow rotating shaft and the grinding blade of the heating component are directly cooled when the cooling device is used, and the cooling effect is good; meanwhile, cooling is concentrated in the grinding cylinder body, so that the loss of cold energy is less, and the cooling effect is ensured.

Preferably, the water outlet device comprises a water outlet pipe, a water outlet tank and a water outlet tank shaft seal assembly, the water outlet pipe is communicated with the water outlet tank, the water outlet tank is rotationally communicated with the open end of the hollow rotating shaft, and the water outlet tank shaft seal assembly is arranged at the joint of the water outlet tank and the hollow rotating shaft.

By adopting the technical scheme, the water outlet tank can better receive the cooling water flowing out of the hollow rotating shaft; meanwhile, the water outlet tank shaft seal assembly can play a good sealing role in the joint of the hollow rotating shaft and the water outlet tank.

Preferably, the grinding cylinder further comprises a grinding cylinder shaft seal assembly, and the grinding cylinder shaft seal assembly is arranged at the joint of the hollow rotating shaft and the grinding cylinder body.

Through adopting above-mentioned technical scheme, grinding vessel shaft seal subassembly can play better sealed effect to hollow axis of rotation and grinding vessel body junction.

Preferably, be provided with the protruding and outlet box slide rail arch of annular grinding vessel slide rail on the hollow axis of rotation outer wall, and the protruding radius of grinding vessel slide rail equals with the protruding radius of outlet box slide rail, be provided with in the middle of the grinding vessel slide rail arch and be used for with the first recess track of grinding vessel bearing seal subassembly complex, be provided with in the middle of the outlet box slide rail arch and be used for with outlet box bearing seal subassembly complex second recess track.

Through adopting above-mentioned technical scheme, the bellied radius of grinding vessel slide rail equals with the bellied radius of play water tank slide rail, has the support position of two high parallel and levels to hollow axis of rotation to make hollow axis of rotation and grinding shaft body and play water tank's connection more stable.

Preferably, the water outlet tank shaft seal assembly comprises a water outlet tank inner sealing ring, a water outlet tank outer sealing ring and a water outlet tank sliding rail; the inner sealing ring of the water outlet tank and the outer sealing ring of the water outlet tank are fixedly connected on the inner wall of the opening of the water outlet tank and elastically abut against the outer wall of the hollow rotating shaft, and the inner sealing ring of the water outlet tank and the outer sealing ring of the water outlet tank are bent towards two sides; the water outlet tank slide rail is fixedly connected to the inner wall of the opening of the water outlet tank and is annular, and a circle of water outlet tank balls are arranged between the water outlet tank slide rail and the second groove rail.

By adopting the technical scheme, the inner sealing ring of the water outlet tank and the outer sealing ring of the water outlet tank enable the sealing performance of the joint of the hollow rotating shaft and the water outlet tank to be better; meanwhile, the hollow rotating shaft can rotate more smoothly by the aid of the water outlet tank sliding rails and the water outlet tank balls, and accordingly grinding efficiency is higher.

Preferably, the grinding cylinder shaft seal assembly comprises a grinding cylinder inner sealing ring, a grinding cylinder outer sealing ring and a grinding cylinder sliding rail; the grinding cylinder is characterized in that the inner sealing ring and the outer sealing ring of the grinding cylinder are fixedly connected to the inner wall of an opening of the grinding cylinder body and elastically abut against the outer wall of the hollow rotating shaft, the inner sealing ring and the outer sealing ring of the grinding cylinder are bent towards two sides, the grinding cylinder sliding rail is fixedly connected to the inner wall of the opening of the grinding cylinder body and is annular, and a circle of grinding cylinder ball is arranged between the grinding cylinder sliding rail and the first groove rail.

By adopting the technical scheme, the inner sealing ring of the grinding cylinder and the outer sealing ring of the grinding cylinder lead the sealing performance of the joint of the hollow rotating shaft and the grinding cylinder body to be better; simultaneously, grinding vessel slide rail and grinding vessel ball make hollow axis of rotation can rotate more smoothly to make grinding efficiency higher.

Preferably, the cooling water device further comprises a water pump and a circulating water tank, the water pump is fixed in the case and is communicated with the water inlet pipe and the circulating water tank, and the water outlet device is communicated with the circulating water tank; the circulating water tank comprises a circulating water inlet tank and a circulating water outlet tank, the circulating water inlet tank and the circulating water outlet tank are arranged side by side, a partition plate is arranged between the circulating water inlet tank and the circulating water outlet tank, a gap for enabling water to circulate is reserved between the partition plate and the bottom of the circulating water tank, the circulating water inlet tank is communicated with the water pump, and the circulating water outlet tank is communicated with the water outlet pipe.

Through adopting above-mentioned technical scheme, cooling water flows in the circulation water tank through the outlet pipe, and the higher upper strata of staying of the cooling water temperature in the circulation water tank, thereby the cooling water cooling back temperature in the circulation water tank reduces and sinks, flows into the circulation water tank through the space of baffle and circulation water tank bottom to supply the inlet tube to inhale the good cooling water of cooling once more and cool off, make the effective live time of the cooling water in the circulation water tank longer.

Preferably, the grinding barrel body inner wall is provided with a round platform-shaped limiting bulge corresponding to the hollow rotating shaft center, the hollow rotating shaft outer wall is provided with a limiting groove matched with the limiting bulge corresponding to the limiting bulge, and the limiting bulge is embedded and connected in the limiting groove in a rotating mode.

Through adopting above-mentioned technical scheme, the cooperation of spacing arch and spacing groove makes hollow axis of rotation spacing groove one end can obtain the support to it is more stable when rotating to make hollow axis of rotation.

Drawings

FIG. 1 is a schematic perspective view of a horizontal sander;

FIG. 2 is a sectional view showing a three-dimensional structure of a horizontal type sander;

FIG. 3 is an enlarged schematic view of section A of FIG. 2;

FIG. 4 is a cross-sectional view of the horizontal sander.

Description of reference numerals: 1. a chassis; 11. a circular opening of the case; 12. a control panel; 2. a grinding cylinder; 21. grinding the cylinder body; 211. grinding the round opening of the cylinder body; 212. a feed inlet; 213. a discharge port; 22. a grinding cylinder shaft seal assembly; 221. a grinding cylinder sealing ring fixing ring; 2211. an inner sealing ring of the grinding cylinder; 2212. the grinding cylinder is externally sealed; 222. a grinding cylinder slide rail fixing ring; 223. a grinding cylinder slide rail; 224. grinding cylinder balls; 23. a limiting bulge; 3. a grinding device; 31. a hollow rotating shaft; 311. a water outlet of the rotating shaft; 312. a grinding cylinder slide rail is raised; 313. a first groove track; 314. the slide rail of the water outlet tank is convex; 315. a second groove track; 316. a limiting groove; 32. a drive belt; 33. a motor; 331. a belt pulley; 34. grinding the blade; 4. a cooling water device; 41. a water inlet pipe; 411. a water outlet end; 412. a water inlet end; 42. a water pump; 43. a water outlet device; 431. a water outlet pipe; 432. a water outlet tank; 433. a water outlet tank shaft seal assembly; 4331. a water outlet tank sealing ring fixing ring; 4332. an inner sealing ring; 4333. the water outlet tank is externally sealed; 4334. a water outlet tank slide rail fixing ring; 4335. a water outlet tank slide rail; 4336. a water outlet tank ball bearing; 44. a circulating water tank; 441. circulating a water inlet tank; 442. circulating a water outlet tank; 443. a partition plate; 45. a suction pipe.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses a horizontal sand mill. Referring to fig. 1 and 2, the horizontal type sand mill includes a housing 1 for fixed support, a grinding drum 2 for containing a grinding material, a grinding means 3 for grinding the material, and a cooling water means 4 for in-shaft cooling, wherein the case 1 is an L-shaped hollow box structure, the inner side of the upper part of the case 1 is provided with a case circular opening 11, the grinding cylinder 2 comprises a grinding cylinder body 21 and a grinding cylinder shaft seal component 22 fixedly connected on the grinding cylinder body 21 and used for connecting and fixing the grinding device 3, the grinding cylinder body 21 is a hollow cylinder structure, one side of the grinding cylinder body 21 is provided with a grinding cylinder body circular opening 211, the inner wall of the grinding cylinder body circular opening 211 is provided with the grinding cylinder shaft seal component 22, the grinding cylinder 2 is transversely fixed on the case 1, the grinding cylinder shaft seal component 22 extends and is fixedly connected in the case circular opening 11 of the case 1, and the outer wall of the grinding cylinder shaft seal assembly 22 is fixedly connected to the inner wall of the circular opening 11 of the case 1. The upper end of the grinding cylinder 21 is provided with a feed inlet 212 and is matched with a valve, so that grinding raw materials such as grinding beads can enter the grinding cylinder 21, and the lower end of the grinding cylinder 21 is provided with a discharge outlet 213 and is matched with a valve, so that the ground products can flow out. The grinding device 3 and the cooling water device 4 are fixed inside the case 1, wherein the grinding device 3 comprises a hollow rotating shaft 31, a transmission belt 32 and a driving piece for driving the hollow rotating shaft 31 to rotate, the hollow rotating shaft 31 is a hollow cylinder structure with an opening on one side, the opening end of the hollow rotating shaft 31 is a rotating shaft water outlet 311, the hollow rotating shaft 31 passes through the grinding cylinder body 21 and the grinding cylinder body circular opening 211 and the case circular opening 11 on the case 1, the hollow rotating shaft 31 passes through the closed end of the grinding cylinder body circular opening 211 and extends into the grinding cylinder body 21, so that the hollow rotating shaft 31 is fixed at the joint of the grinding cylinder body 21 and can rotate freely, the hollow rotating shaft 31 passes through the rotating shaft water outlet 311 of the case circular opening 11 and extends into the case 1, wherein the outer wall of the hollow rotating shaft 31 is fixedly connected with a group of grinding blades 34, and the hollow, thereby grinding the materials; in this embodiment, the driving member is provided with a driving belt 32 and a motor 33, the driving belt 32 can also be replaced by other driving devices, such as a driving chain, etc., the motor 33 is disposed below the hollow rotating shaft 31, and the motor 33 is fixed on the inner sidewall of the cabinet 1, the motor 33 is provided with a belt pulley 331, such that one end of the driving belt 32 is sleeved on the belt pulley 331, and the other end is sleeved on the hollow rotating shaft 31, so that the motor 33 can drive the hollow rotating shaft 31 to rotate. Referring to fig. 4, the hollow rotating shaft 31 is connected to the cooling water device 4, the cooling water device 4 includes a water inlet pipe 41, a water pump 42, a water outlet device 43, and a circulating water tank 44 for storing cooling water, wherein the circulating water tank 44 is a hollow structure, the circulating water tank 44 includes a circulating water inlet tank 441 and a circulating water outlet tank 442, the circulating water inlet tank 441 and the circulating water outlet tank 442 are disposed adjacent to each other, a partition 443 is disposed between the circulating water inlet tank 441 and the circulating water outlet tank 442, the partition 443 is disposed in the middle of the circulating water tank 44, the partition 443 is spaced from the bottom of the circulating water tank 44, a thermal insulation layer is disposed outside the partition 443, the thermal insulation layer may be made of rigid polyurethane foam plastic material, the water from the circulating water outlet tank 442 flows into the circulating water inlet tank 441 after being cooled by water, so as to realize the circulation of cooling water, the water, the water outlet end 411 of the water inlet pipe 41 extends into the hollow rotating shaft 31, the water inlet end 412 is communicated with a water pump 42, the water pump 42 is fixed on the side wall of the interior of the case, the lower end of the water pump 42 is communicated with a water suction pipe 45, the water suction pipe 45 vertically extends into the circulating water inlet tank 441 to suck cooling water from the circulating water tank 44, the water outlet device 43 is connected to the outer side of the opening end of the hollow rotating shaft 31, the water outlet device 43 comprises a water outlet pipe 431 and a water outlet tank 432, the water outlet pipe 431 is connected and arranged at the bottom of the water outlet tank 432, the lower end of the water outlet pipe 431 extends into the circulating water outlet tank 442 of the circulating water tank 44 to enable the cooling water to flow back to the circulating water tank 44 after use, the water outlet tank 432 is of a hollow structure, and a water outlet tank shaft seal assembly.

Referring to fig. 3, a circle of grinding cylinder slide rail protrusion 312 is disposed at a joint of the outer wall of the hollow rotating shaft 31 and the grinding cylinder shaft seal assembly 22, an arc-shaped first groove rail 313 is disposed in the middle of the outer ring of the grinding cylinder slide rail protrusion 312, a circle of water outlet tank slide rail protrusion 314 is disposed at a joint of the outer wall of the hollow rotating shaft 31 and the water outlet tank shaft seal assembly 433, and an arc-shaped second groove rail 315 is disposed in the middle of the outer ring of the water outlet tank slide rail protrusion 314. The outlet tank shaft seal assembly 433 comprises an outlet tank seal ring fixing ring 4331, an outlet tank slide rail fixing ring 4334 and an outlet tank slide rail 4335, wherein the section of the outlet tank seal ring fixing ring 4331 is L-shaped, the outlet tank seal ring fixing ring 4331 is embedded in the inner wall of the opening of the outlet tank 432, the inner wall of the outlet tank seal ring 4331 is fixed with an inner outlet tank seal ring 4332 and an outer outlet tank seal ring 4333 which are made of rubber materials, wherein the inner outlet tank seal ring 4332 is arranged at a side close to the outlet tank 432 and is bent towards the inner side of the outlet tank 432, the outer outlet tank seal ring 4333 is arranged at a side far from the outlet tank 432 and is bent towards the outer side of the outlet tank 432, the outlet tank slide rail fixing ring 4334 is embedded in the inner wall of the outlet tank shaft seal assembly 433, the outlet tank slide rail 4335 is fixed at a side of the outlet tank slide rail fixing ring 4334, an arc-shaped groove is formed in the middle of the inner wall of the water outlet tank slide rail 4335, and a circle of water outlet tank ball 4336 is arranged between the groove on the inner side of the water outlet tank slide rail 4335 and the second groove rail 315 on the hollow rotating shaft 31, so that the hollow rotating shaft 31 can rotate freely when being connected to the water outlet tank 432 in a sealing manner. The grinding cylinder shaft seal assembly 22 comprises a grinding cylinder sealing ring fixing ring 221, a grinding cylinder sliding rail fixing ring 222 and a grinding cylinder sliding rail 223, wherein the section of the grinding cylinder sealing ring fixing ring 221 is L-shaped, the grinding cylinder sealing ring fixing ring 221 is embedded in the inner wall of the opening of the grinding cylinder body 21, the inner wall of the grinding cylinder sealing ring fixing ring 221 is fixed with a grinding cylinder inner sealing ring 2211 and a grinding cylinder outer sealing ring 2212 which are made of rubber materials, wherein the grinding cylinder inner sealing ring 2211 is arranged at one side close to the grinding cylinder body 21 and is bent towards the inner side of the grinding cylinder body 21, the grinding cylinder outer sealing ring 2212 is arranged at one side far away from the grinding cylinder body 21 and is bent towards the outer side of the grinding cylinder body 21, the grinding cylinder sliding rail fixing ring 222 is embedded in the inner wall of the grinding cylinder assembly 22, the grinding cylinder sliding rail 223 is fixed on the side of the grinding cylinder sliding, and a circle of arc-shaped grooves are arranged in the middle of the inner wall of the grinding cylinder slide rail 223, and a circle of grinding cylinder balls 224 are arranged between the grooves on the inner side of the grinding cylinder slide rail 223 and the first groove track 313 on the hollow rotating shaft 31, so that the hollow rotating shaft 31 can rotate freely when being connected to the grinding cylinder body 21 in a sealing manner.

Referring to fig. 3 and 4, the center of the bottom end of the inner wall of the grinding barrel body 21 is provided with a circular truncated cone-shaped limiting protrusion 23, the outer wall of the hollow rotating shaft 31 is provided with a limiting groove 316 corresponding to the limiting protrusion 23, and the limiting protrusion 23 is embedded and rotatably connected in the limiting groove 316, so that the hollow rotating shaft 31 is more stable in rotation and is not easy to shake up and down.

The implementation principle of the horizontal grinding machine in the embodiment of the application is as follows: when the sand mill operates, the cooling water device 4 starts to operate firstly, the lower end of the water suction pipe 45 sucks the cooling water in the circulating water inlet tank 441 through the power of the water pump 42, the cooling water enters the water inlet pipe 41 through the water pump 42, the water flows through the water inlet pipe 41, the water flows out when the water outlet end 411 of the water inlet pipe 41 starts to flow into the hollow rotating shaft 31, the hollow rotating shaft 31, the grinding blade 34 and the grinding cylinder body 21 are cooled, cooling water flows into the water outlet tank 432 through a gap between the outer wall of the water inlet pipe 41 and the inner wall of the hollow rotating shaft 31, then flows into the circulating water outlet tank 442 through the water outlet pipe 431 below the water outlet tank 432, the cooling water in the circulating water outlet tank 442 stays on the upper layer with higher temperature, the cooling water in the circulating water outlet tank 442 is cooled and then the temperature is reduced so as to sink, flows into the circulating water tank 441 through a gap between the partition 443 and the bottom of the circulating water tank 44, so that the cooled cooling water is sucked again by the water inlet pipe. After the cooling water device 4 starts to circulate, the valve of the feed port 212 is opened, appropriate grinding beads or other grinding materials are put into the feed port 212, the motor 33 is started, the motor 33 drives the hollow rotating shaft 31 and the grinding blade 34 arranged on the hollow rotating shaft 31 to rotate through the transmission belt 32, the grinding materials in the grinding barrel 2 are ground, the limiting groove 316 clamps the limiting protrusion 23 inside the grinding barrel body 21 when the hollow rotating shaft 31 rotates, and the hollow rotating shaft 31 is not easy to shake when rotating.

Claims

1. A horizontal sand mill comprises a case (1), a grinding cylinder (2), a grinding device (3) and a cooling water device (4), wherein the grinding cylinder (2) comprises a grinding cylinder body (21), the grinding cylinder body (21) is horizontally and fixedly connected to the case (1), and a feeding hole (212) and a discharging hole (213) are formed in the grinding cylinder body (21); grinder (3) one end level is stretched into in grinding shaft (21) and is rotated and supported on grinding shaft (21) and quick-witted case (1), its characterized in that: grinding device (3) include one end open-ended hollow axis of rotation (31), rigid coupling grinding blade (34) on hollow axis of rotation (31) and be used for ordering about hollow axis of rotation (31) pivoted driving piece, cooling water installation (4) are including inlet tube (41) and play water installation (43), inlet tube (41) intercommunication has the water source and stretches into in hollow axis of rotation (31), play water installation (43) are fixed in quick-witted case (1) and rotate the intercommunication with hollow axis of rotation (31) open end.

2. The horizontal sand mill of claim 1, wherein: the water outlet device (43) comprises a water outlet pipe (431), a water outlet tank (432) and a water outlet tank shaft seal assembly (433), wherein the water outlet pipe (431) is communicated with the water outlet tank (432), the water outlet tank (432) is rotationally communicated with the open end of the hollow rotating shaft (31), and the water outlet tank shaft seal assembly (433) is arranged at the joint of the water outlet tank (432) and the hollow rotating shaft (31).

3. The horizontal sand mill of claim 2, wherein: the grinding cylinder (2) further comprises a grinding cylinder shaft seal assembly (22), and the grinding cylinder shaft seal assembly (22) is arranged at the joint of the hollow rotating shaft (31) and the grinding cylinder body (21).

4. The horizontal sand mill of claim 3, wherein: be provided with annular grinding vessel slide rail arch (312) and outlet box slide rail arch (314) on hollow axis of rotation (31) outer wall, and grinding vessel slide rail arch (312) and outlet box slide rail arch (314) radius equal, be provided with in the middle of grinding vessel slide rail arch (312) and be used for with grinding vessel bearing seal subassembly (22) complex first recess track (313), be provided with in the middle of outlet box slide rail arch (314) and be used for with outlet box bearing seal subassembly (433) complex second recess track (315).

5. The horizontal sand mill of claim 4, wherein: the water outlet box shaft seal component (433) comprises a water outlet box inner sealing ring (4332), a water outlet box outer sealing ring (4333) and a water outlet box sliding rail (4335); the water outlet box inner sealing ring (4332) and the water outlet box outer sealing ring (4333) are fixedly connected to the inner wall of the opening of the water outlet box (432) and elastically abutted against the outer wall of the hollow rotating shaft (31), and the water outlet box inner sealing ring (4332) and the water outlet box outer sealing ring (4333) are bent towards two sides; the water outlet tank slide rail (4335) is fixedly connected to the inner wall of the opening of the water outlet tank (432) and is annular, and a circle of water outlet tank ball bearings (4336) are arranged between the water outlet tank slide rail (4335) and the second groove track (315).

6. The horizontal sand mill of claim 5, wherein: the grinding cylinder shaft seal assembly (22) comprises a grinding cylinder inner sealing ring (2211), a grinding cylinder outer sealing ring (2212) and a grinding cylinder sliding rail (223); the grinding cylinder is to sealing washer (2211) and grinding cylinder to outer sealing washer (2212) rigid coupling on grinding cylinder body (21) opening inner wall and with hollow axis of rotation (31) outer wall elasticity butt, the grinding cylinder is to sealing washer (2211) and grinding cylinder to outer sealing washer (2212) bending towards both sides to the inner, grinding cylinder slide rail (223) rigid coupling just is the annular on grinding cylinder body (21) opening inner wall, be provided with round grinding cylinder ball (224) between grinding cylinder slide rail (223) and first recess track (313).

7. The horizontal sand mill of claim 1, wherein: the cooling water device (4) further comprises a water pump (42) and a circulating water tank (44), the water pump (42) is fixed in the case (1) and communicated with the water inlet pipe (41) and the circulating water tank (44), and the water outlet device (43) is communicated with the circulating water tank (44); the circulating water tank (44) comprises a circulating water inlet tank (441) and a circulating water outlet tank (442), the circulating water inlet tank (441) and the circulating water outlet tank (442) are arranged side by side, a partition plate (443) is arranged between the circulating water inlet tank (441) and the circulating water outlet tank (442), a gap for water circulation is reserved between the partition plate (443) and the bottom of the circulating water tank (44), the circulating water inlet tank (441) is communicated with the water pump (42), and the circulating water outlet tank (442) is communicated with the water outlet pipe (431).

8. The horizontal sand mill of claim 1, wherein: the grinding barrel body (21) inner wall is provided with a round platform-shaped limiting protrusion (23) corresponding to the center of the hollow rotating shaft (31), the outer wall of the hollow rotating shaft (31) is provided with a limiting groove (316) used for being matched with the limiting protrusion (23) corresponding to the limiting protrusion (23), and the limiting protrusion (23) is embedded, arranged and connected in the limiting groove (316) in a rotating mode.