CN112555415A - Anti-leakage vacuum machine seal structure with cooling function and system thereof - Google Patents
Anti-leakage vacuum machine seal structure with cooling function and system thereof Download PDFInfo
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- CN112555415A CN112555415A CN202011462404.4A CN202011462404A CN112555415A CN 112555415 A CN112555415 A CN 112555415A CN 202011462404 A CN202011462404 A CN 202011462404A CN 112555415 A CN112555415 A CN 112555415A
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- 238000001816 cooling Methods 0.000 title claims abstract description 102
- 238000007789 sealing Methods 0.000 claims abstract description 74
- 239000000110 cooling liquid Substances 0.000 claims abstract description 60
- 230000003068 static effect Effects 0.000 claims abstract description 53
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 68
- 239000007788 liquid Substances 0.000 claims description 22
- 239000002826 coolant Substances 0.000 claims description 18
- 238000012544 monitoring process Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims 1
- 239000002994 raw material Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 14
- 238000013461 design Methods 0.000 abstract description 3
- 239000012809 cooling fluid Substances 0.000 description 5
- 239000000843 powder Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/162—Special parts or details relating to lubrication or cooling of the sealing itself
Abstract
The invention discloses a leakage-proof vacuum machine seal structure with cooling, which comprises a dynamic unit, a static unit and a cooling seal unit, wherein the dynamic unit comprises a driving shaft and a movable ring arranged on the driving shaft, and a cooling groove cavity is formed in the side wall of one end of the movable ring; the static unit is sleeved on the outer side of the driving shaft and comprises a shell and a static ring arranged on the shell, and the static ring is in matched contact with one end of the movable ring, which is provided with a cooling groove cavity; the cooling sealing unit comprises a backflow pipeline, a vacuum pressure assembly and a cooling liquid box, the backflow pipeline is communicated with the cooling tank cavity and the cooling liquid box, and the vacuum pressure assembly is arranged on the cooling liquid box in a matched mode; the movable ring and the static ring are matched, so that single-end sealing of mechanical equipment can be realized, the structure is simple, and the sealing effect is good; the cooling effect is obvious under the condition that a return pipeline arranged between the movable ring and the static ring is filled with cooling liquid; and the cooling box adopts the vacuum design for the cooling pipeline wholly possesses excellent leak protection ability.
Description
Technical Field
The invention relates to the technical field of mechanical cooling sealing, in particular to a leakage-proof vacuum machine seal structure with cooling and a system thereof.
Background
The mechanical seal structure (simply referred to as "mechanical seal structure") of the existing water pump or mechanical pump generally adopts a single-end-face mechanical seal form, but in such a seal form, when the pump body does not have water to enter or other materials enter, the pump body can idle by itself, the temperature of the contact end face of the movable ring and the static ring can be rapidly increased at the moment, and then the rubber seal is burnt or the rapid aging of the rubber seal is accelerated, so that the pump body is leaked to cause damage.
The existing Chinese patent with application number of CN201910516907.6 provides a water-cooled single-end-face mechanical sealing structure and a working method thereof, and the main method is that a sealing loop is arranged on one side of a moving ring, which is in contact with a static ring, and cooling water is introduced from the outside, so that heat generated by the moving ring in frictional contact with the static ring is effectively dissipated, and the static ring is kept in a reasonable temperature range all the time; however, in this solution, when the rotation shaft stops rotating, the coolant pumped by the impeller still stays in the water inlet pipeline, the water outlet pipeline and the loop, and if the sealing structure leaks (possibly caused by the deformation of the spring or the temperature rise and deformation of the movable ring and the stationary ring), the coolant in the water tank and in the pipeline also flows into the pump body equipment under the action of the pressure difference, so that the equipment is damaged. Therefore, the problem of structure leakage needs to be prevented while realizing single-side mechanical sealing, and for this reason, a vacuum machine sealing structure with cooling and capable of preventing cooling liquid leakage is proposed.
Disclosure of Invention
This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. In this section, as well as in the abstract and the title of the invention of this application, simplifications or omissions may be made to avoid obscuring the purpose of the section, the abstract and the title, and such simplifications or omissions are not intended to limit the scope of the invention.
The present invention has been made in view of the above-mentioned problems of the conventional mechanical seal structure.
Therefore, one problem to be solved by the present invention is to provide a leak-proof vacuum sealing structure with cooling, which aims to solve the problems of seal cooling and leakage through a completely new structural design.
In order to solve the technical problems, the invention provides the following technical scheme: a leakage-proof vacuum sealing structure with cooling function comprises a dynamic unit, a static unit and a cooling sealing unit, wherein the dynamic unit comprises a driving shaft and a movable ring arranged on the driving shaft; the static unit is sleeved on the outer side of the driving shaft and comprises a shell and a static ring arranged on the shell, a cooling groove cavity is formed in the side wall of one end of the dynamic ring/the static ring, and the static ring and one end of the dynamic ring, which is provided with the cooling groove cavity, are in matched contact; and the cooling sealing unit comprises a return pipeline, a vacuum pressure assembly and a cooling liquid box, the return pipeline is communicated with the cooling tank cavity and the cooling liquid box, and the vacuum pressure assembly is arranged on the cooling liquid box in a matching mode.
As a preferable aspect of the leak-proof vacuum sealing structure with cooling of the present invention, wherein: and a spring seat is fixedly arranged on the driving shaft, and a tension spring is arranged between the spring seat and the movable ring.
As a preferable aspect of the leak-proof vacuum sealing structure with cooling of the present invention, wherein: the movable ring is sleeved on the driving shaft through a first sealing ring.
As a preferable aspect of the leak-proof vacuum sealing structure with cooling of the present invention, wherein: the cooling groove cavity comprises a water inlet groove, a water outlet groove and flow guide holes, the water inlet groove and the water outlet groove are distributed in an annular concentric circle mode, and multiple groups of flow guide holes are distributed at intervals and communicated with the water inlet groove and the water outlet groove.
As a preferable aspect of the leak-proof vacuum sealing structure with cooling of the present invention, wherein: a second sealing ring is further arranged between the shell and the static ring, and a pipeline placing hole is further formed in the side walls of the shell and the static ring.
As a preferable aspect of the leak-proof vacuum sealing structure with cooling of the present invention, wherein: the backflow pipeline comprises a water inlet pipe and a water outlet pipe, the water inlet pipe is communicated with the water inlet tank and the cooling liquid tank, and the water outlet pipe is communicated with the water outlet tank and the cooling liquid tank.
As a preferable aspect of the leak-proof vacuum sealing structure with cooling of the present invention, wherein: and the water inlet pipe is also provided with a circulating pump and a control valve.
As a preferable aspect of the leak-proof vacuum sealing structure with cooling of the present invention, wherein: the vacuum pressure assembly comprises a vacuum pump, a pressure gauge and a liquid level monitor, the vacuum pump and the pressure gauge are communicated with the top of the cooling liquid tank, and the liquid level monitor is connected to the side wall of the cooling liquid tank.
Another problem to be solved by the present invention is to provide a leak-proof vacuum sealing system with cooling, which aims to solve the problem of seal cooling and leakage by providing a cooling and leak-proof vacuum sealing system.
In order to solve the technical problems, the invention provides the following technical scheme: a leak-proof vacuum sealing system with cooling, the system using the vacuum sealing structure, comprising: the dynamic unit comprises a driving shaft and a movable ring driven by the driving shaft, wherein a cooling groove cavity for containing cooling liquid is formed in the side wall of the movable ring; a static unit having a static ring fitted with the dynamic ring for unilateral sealing; and the cooling sealing unit comprises a return pipeline, a vacuum pressure assembly and a cooling liquid tank, wherein the return pipeline is communicated with the cooling tank cavity and the cooling liquid tank to form a complete cooling loop, and the vacuum pressure assembly is used for monitoring and maintaining the vacuum state of the cooling liquid tank.
As a preferable aspect of the leak-proof vacuum sealing system with cooling of the present invention, wherein: the movable ring rotates along with the driving shaft synchronously, and the movable ring is attached to the side wall of the static ring under the action of the tensioning spring.
The invention has the beneficial effects that:
the movable ring and the static ring are matched, so that single-end sealing of mechanical equipment can be realized, the structure is simple, and the sealing effect is good; the cooling effect is obvious under the condition that a return pipeline arranged between the movable ring and the static ring is filled with cooling liquid; and the cooling box adopts the vacuum design for the cooling pipeline wholly possesses excellent leak protection ability.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise. Wherein:
FIG. 1 is a schematic view of the overall connection of the leak-proof vacuum sealing structure with cooling according to the present invention.
FIG. 2 is a schematic plan view of the sealing structure of the leak-proof vacuum sealing structure with cooling according to the present invention.
FIG. 3 is a schematic view of the whole structure of the movable ring of the leak-proof vacuum sealing structure with cooling of the present invention.
FIG. 4 is a schematic plan view of a cooling structure of the leak-proof vacuum sealing structure with cooling according to the present invention.
FIG. 5 is a schematic view of the coolant flow path of the leak-proof vacuum seal with cooling of the present invention.
Fig. 6 is a schematic view of the overall connection plan of the leak-tight vacuum sealing system with cooling of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Furthermore, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Furthermore, the present invention is described in detail with reference to the drawings, and in the detailed description of the embodiments of the present invention, the cross-sectional view illustrating the structure of the device is not enlarged partially according to the general scale for convenience of illustration, and the drawings are only exemplary and should not be construed as limiting the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.
Example 1
Referring to fig. 1, 2 and 6, for a first embodiment of the present invention, there is provided a leak-proof vacuum sealing structure with cooling on one side, the vacuum sealing structure includes a dynamic unit 100, a static unit 200 and a cooling sealing unit 300, wherein the dynamic unit 100 includes a driving shaft 101 and a movable ring 102 disposed on the driving shaft 101, and a cooling groove 103 is disposed on a side wall of one end of the movable ring 102; the static unit 200 is sleeved outside the driving shaft 101 and comprises a housing 201 and a static ring 202 arranged on the housing 201, and the static ring 202 is in fit contact with one end of the dynamic ring 102 with the cooling groove cavity 103.
A spring seat 101a is also fixedly mounted on the driving shaft 101, and a tension spring 101b is arranged between the spring seat 101a and the movable ring 102.
The rotating ring 102 is fitted to the drive shaft 101 via a first seal ring 102 a.
A second sealing ring 203 is further arranged between the housing 201 and the stationary ring 202.
The main body of the single-side sealing structure comprises a dynamic unit 100 and a static unit 200, a sealing forming surface is formed by contacting single end faces of a moving ring 102 in the dynamic unit 100 and a static ring 202 in the static unit 200, the dynamic unit 100 is a dynamic environment formed by rotation of a driving shaft 101, and the static unit 200 is a static environment formed by fixing on a pumping device shell 201.
In order to maintain the sealing effect of the single-end-face sealing structure, the following measures are added: specifically, in order to keep the end surfaces of the moving ring 102 and the stationary ring 202 in stable contact, a tension spring 101b is installed at one end of the moving ring 102, which is far away from the stationary ring 202, the tension spring 101b is fixed on the driving shaft 101 through a spring seat 101a and keeps rotating synchronously with the moving ring 102, and under the action of the tension spring 101b, the moving ring 102 can be stably attached to the end surface of the stationary ring 202, so that a good sealing effect is always kept. Secondly, when the movable ring 102 is sleeved on the driving shaft 101, the first sealing ring 102a is connected to the axis of the movable ring in a connecting manner, so that the situation that the movable ring 102 and the sealing structure are damaged due to the fact that pumped water or powder enters the connecting position is avoided. And when the static ring 202 is installed in the housing 201, the second sealing ring 203 is also installed between the static ring 202 and the housing, and the second sealing ring is also used for preventing the static ring 202 from being damaged due to the fact that pumped water or powder enters the joint, and further the sealing performance of the sealing structure is damaged.
Example 2
Referring to fig. 2 to 5, in a second embodiment of the present invention, since the moving ring 102 moves at a high speed along with the driving shaft 101 and the stationary ring 202 is fixed, heat is generated at the contact surface between the moving ring and the stationary ring due to friction, and when the apparatus operates normally, pumped water or powder flows continuously to take away part of the heat, so that no heat is accumulated at the contact surface; however, during idling, the hard friction between the moving ring 102 and the stationary ring 202 may cause the contact surface heat to be too high, and further burn out or accelerate the damage of the stationary ring 202, and to solve this problem, the following embodiments are adopted: this embodiment differs from the first embodiment in that:
the cooling tank cavity 103 comprises a water inlet tank 103a, a water outlet tank 103b and guide holes 103c, the water inlet tank 103a and the water outlet tank 103b are distributed in an annular concentric circle, and the guide holes 103c are distributed at intervals and are communicated with the water inlet tank 103a and the water outlet tank 103 b.
The side walls of the housing 201 and the stationary ring 202 are also provided with a pipe placing hole S.
The cooling sealing unit 300 comprises a return pipeline 301 and a cooling liquid tank 303, wherein the return pipeline 301 is communicated with the cooling tank cavity 103 and the cooling liquid tank 303.
The return pipe 301 comprises a water inlet pipe 301a and a water outlet pipe 301b, the water inlet pipe 301a is communicated with the water inlet tank 103a and the cooling liquid tank 303, and the water outlet pipe 301b is communicated with the water outlet tank 103b and the cooling liquid tank 303.
The water inlet pipe 301a is also provided with a circulating pump 301a-1 and a control valve 301 a-2.
Compared with the embodiment 1, further, in order to solve the problem of heat dissipation at the contact surface between the moving ring 102 and the stationary ring 202, a cooling tank cavity 103 for containing cooling fluid is disposed on the contact end surface between the moving ring 102 and the stationary ring 202, and with reference to fig. 3, the cooling tank cavity 103 includes an annular water inlet tank 103a and a water outlet tank 103b that are concentrically disposed, the water outlet tank 103b is located at the outer ring of the water inlet tank 103a, and the water inlet tank 103a and the water outlet tank 103b are communicated through a diversion hole 103 c. It should also be noted that, both notches face the stationary ring 202, and the area of the notch is larger than that of the groove bottom, so that the larger contact surface is more beneficial for the cooling liquid to take away more heat. The flow guide holes 103c are located in a groove wall between the two annular grooves, the flow guide holes 103c can be used for allowing the cooling liquid to flow from the water inlet groove 103a to the water outlet groove 103b, and it should be noted that the number of the flow guide holes 103c can be set to one or more, specifically, the number is determined by the heat quantity to be dissipated when the device is operated.
Referring to fig. 4 and 5, the introduction and the discharge of the cooling liquid are respectively realized by a water inlet pipe 301a and a water outlet pipe 301b, one end of the water inlet pipe 301a penetrates through the side walls of the housing 201 and the stationary ring 202 through a pipe placing hole S to communicate with the water inlet tank 103a, the other end is connected to the cooling liquid tank 303, one end of the water outlet pipe 301b penetrates through the side walls of the housing 201 and the stationary ring 202 through the pipe placing hole S to connect with the water outlet tank 103b, and the other end is connected to the cooling liquid tank 303, so that the cooling liquid in the cooling liquid tank 303 can enter the water inlet pipe 103a from the water inlet pipe 301a and can enter the water outlet tank 103b through the diversion hole 103c, and then flows out from the water outlet pipe 301b to integrally form a complete cooling circuit, the flow of the cooling liquid is driven by the circulating pump 301a-1, and the. The flowing of the cooling liquid can take away the heat of the contact end face of the movable ring 102 and the static ring 202, and the use safety of the equipment is guaranteed.
The rest of the structure is the same as that of embodiment 1.
Example 3
Referring to fig. 1 to 6, as a third embodiment of the present invention, in the cooling structure of embodiment 2, the cooling liquid tank 303, the return pipe 301 and the cooling tank cavity 103 form a complete cooling liquid flowing loop, which is premised on that the cooling structure loop is complete and has no leakage, but when leakage occurs between the moving ring 102 and the stationary ring 202, the cooling liquid flowing loop slows down, the cooling effect is weakened, and the leakage may occur to the pumping equipment, and further the liquid or powder in the pump is polluted, therefore, in order to prevent the cooling liquid leakage, the following embodiments are adopted:
the cooling and sealing unit 300 further includes a vacuum pressure assembly 302, and the vacuum pressure assembly 302 is fittingly disposed on the cooling liquid tank 303.
The vacuum pressure assembly 302 includes a vacuum pump 302a, a pressure gauge 302b and a level monitor 302c, the vacuum pump 302a and the pressure gauge 302b are connected to the top of the cooling liquid tank 303, and the level monitor 302c is connected to the side wall of the cooling liquid tank 303.
Compared with the embodiment 2, the further addition of the vacuum pressure assembly 302 in the cooling liquid tank 303 specifically includes connecting the vacuum pump 302a in the cooling liquid tank 303, so that the cooling liquid flowing loop formed by the cooling liquid tank 303, the return pipe 301 and the cooling tank cavity 103 is vacuum-reduced, and this arrangement does not hinder the flow of the cooling liquid in the loop, and secondly has the following advantages: firstly, under a low-pressure environment, the pressure in the cooling groove cavity 103 is lower than the external air pressure, and the movable ring 102 is tightly attached to the end surface of the stationary ring 202 due to the action of the air pressure difference, so that the sealing structure with a single end surface is better, and pressure compensation can be performed under the conditions that the tension spring 101b is distorted, deformed or insufficient in force and the like; secondly, when this machine seals the structure and appears revealing, because the return circuit is interior for low pressure environment, and there is the pressure differential with the external world, under the pressure effect, can constantly inhale coolant liquid that trickles in the return circuit in the coolant liquid case 303 to consequently avoided the harm that the coolant liquid reveals and cause.
More closely, for the pressure condition that ensures people can learn cooling circuit the very first time, through the pressure in the manometer 302b monitoring coolant liquid case 303, when being less than predetermined pressure value, adjust through vacuum pump 302a, and the liquid level monitor 302c that sets up then is used for monitoring the coolant liquid capacity in the coolant liquid case 303, and the people of being convenient for in time discover the problem and solve the problem.
The rest of the structure is the same as that of embodiment 2.
Example 4
Referring to fig. 1 to 6, a fourth embodiment of the present invention provides a leak-proof vacuum sealing system with cooling function by using the sealing structure described in the previous embodiment, the system using the vacuum sealing structure described above, including: the dynamic unit 100 comprises a driving shaft 101 and a movable ring 102 driven by the driving shaft 101, wherein a cooling groove cavity 103 for accommodating cooling liquid is formed in the side wall of the movable ring 102; a static unit 200 having a static ring 202 that mates with the dynamic ring 102 for single-sided sealing; the cooling sealing unit 300 comprises a return pipeline 301, a vacuum pressure assembly 302 and a cooling liquid tank 303, wherein the return pipeline 301 is communicated with the cooling tank cavity 103 and the cooling liquid tank 303 to form a complete cooling loop, and the vacuum pressure assembly 302 is used for monitoring and maintaining the vacuum state of the cooling liquid tank 303.
The movable ring 102 rotates synchronously with the driving shaft 101, and the movable ring 102 is attached to the side wall of the stationary ring 202 by the tension spring 101 b.
The dynamic ring 102 in the dynamic unit 100 is attached to the end side wall of the static ring 202 under the elastic force of the tension spring 101b, and realizes a stable adsorbed single-side sealing effect under the pressure effect of matching with the vacuum cooling circuit. And in the coolant flow loop that constitutes by coolant liquid case 303, backflow pipeline 301 and cooling tank cavity 103, low pressure vacuum not only does benefit to the flow of coolant liquid, improves the mechanical seal effect moreover, and the low pressure loop is more convenient for monitor through manometer 302b, and low pressure vacuum simultaneously can prevent that the coolant liquid from revealing, reduces the loss.
In this mechanical seal cooling system, under initial condition, the rotating ring 102 is attached on the terminal surface lateral wall of quiet ring 202 under the effect of tensioning spring 101b, and the gas in the coolant liquid cooling circuit is extracted to vacuum pump 302a, through the manometer, whether there is revealing in the monitorable cooling circuit, can be convenient for people in time discover. When the cooling loop is intact, the circulating pump 301a-1 can be started to allow the cooling liquid to flow into the water inlet channel 103a from the cooling liquid tank 303 through the water inlet pipe 301a, and when the rotating ring 102 rotates at a high speed, the cooling liquid flows into the water outlet channel 103b of the outer ring from the water inlet channel 103a of the inner ring under the guidance of the diversion holes 103c under the action of centrifugal force, and flows back into the cooling liquid tank 303 from the water outlet channel 103b through the water outlet pipe 301b to form a complete cooling liquid flowing cooling loop.
When the mechanical sealing structure is worn and leaked, the leakage port is communicated with the outside, and the cooling liquid is pushed into the cooling liquid box 303 from the leakage port by the atmospheric pressure because the cooling loop is in a vacuum low-pressure state and has an atmospheric pressure difference with the outside atmospheric pressure, so that the leakage is avoided.
The system is simple in structure, convenient to operate, stable in sealing performance, excellent in cooling performance and leakage prevention performance and has excellent practical prospect. If the cooling fluid leaks after the moving ring 102 and the stationary ring 202 continuously rub, the cooling fluid is pressed into the cooling tank 303 due to the vacuum pressure assembly 302 matching with the cooling tank 303. Similarly, when the internal liquid or other conditions cause leakage due to the abrasion of the mechanical seal, the leaked liquid can be well pressed into the mechanical seal due to the existence of the vacuum pressure assembly 302 and the cooling tank 303, so that the condition of leakage to the outside is avoided.
In addition, due to the existence of negative pressure, the external atmospheric pressure is promoted to attach the movable ring 102 to the stationary ring 202, so that a good sealing effect is ensured.
The stationary ring 202 and the movable ring 102 are arranged such that the cooling fluid flows from the inlet channel 103a to the outlet channel 103b by the centrifugal force of the rotation of the driving shaft 101, thereby achieving a good guiding centrifugal effect and driving the cooling fluid to circulate.
EXAMPLE five
Example five differs from the above examples in that:
the side wall of one end of the static ring 202 is provided with a cooling groove cavity 103.
A spring seat 101a is also fixedly mounted on the driving shaft 101, and a tension spring 101b is arranged between the spring seat 101a and the movable ring 102.
The rotating ring 102 is fitted to the drive shaft 101 via a first seal ring 102 a.
A second sealing ring 203 is further arranged between the housing 201 and the stationary ring 202.
The main body of the single-side sealing structure comprises a dynamic unit 100 and a static unit 200, a sealing forming surface is formed by contacting single end faces of a moving ring 102 in the dynamic unit 100 and a static ring 202 in the static unit 200, the dynamic unit 100 is a dynamic environment formed by rotation of a driving shaft 101, and the static unit 200 is a static environment formed by fixing on a pumping device shell 201.
According to the above form, several experiments were made as follows, and specific data are as follows:
it should be noted that the above examples were all carried out in a state of running for 8 hours. In order to test whether the leakage is systematic or not, some examples are carried out in a state of breaking the end face of the machine, in which the leakage is 300ml/min per minute in a static state and 600ml/min per minute in operation, on the basis of which 5 liters of water is leaked out quickly without vacuum.
Then, when water is replenished again for operation, the vacuum pump is started, when the vacuum degree reaches-0.3, leakage is stopped immediately, then the vacuum degree is gradually improved, the vacuum machine sealing structure operates stably, and the water temperature rises.
It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (10)
1. The utility model provides a take refrigerated leak-proof vacuum machine to seal structure which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
a dynamic unit (100) comprising a drive shaft (101) and a rotating ring (102) arranged on the drive shaft (101);
the static unit (200) is sleeved outside the driving shaft (101) and comprises a shell (201) and a static ring (202) arranged on the shell (201), a cooling groove cavity (103) is formed in the side wall of one end of the movable ring (102)/the static ring (202), and the static ring (202) is in fit contact with one end, provided with the cooling groove cavity (103), of the movable ring (102); and the number of the first and second groups,
the cooling sealing unit (300) comprises a backflow pipeline (301), a vacuum pressure assembly (302) and a cooling liquid tank (303), wherein the backflow pipeline (301) is communicated with the cooling tank cavity (103) and the cooling liquid tank (303), and the vacuum pressure assembly (302) is arranged on the cooling liquid tank (303) in a matched mode.
2. A leak-proof vacuum machine seal with cooling as defined in claim 1, wherein: and a spring seat (101 a) is fixedly mounted on the driving shaft (101), and a tension spring (101 b) is arranged between the spring seat (101 a) and the movable ring (102).
3. A leak-proof vacuum machine seal with cooling according to claim 1 or 2, characterized in that: the movable ring (102) is sleeved on the driving shaft (101) through a first sealing ring (102 a).
4. A leak-proof vacuum machine seal with cooling as defined in claim 1, wherein: the cooling tank cavity (103) comprises a water inlet tank (103 a), a water outlet tank (103 b) and guide holes (103 c), the water inlet tank (103 a) and the water outlet tank (103 b) are distributed in an annular concentric circle, and a plurality of groups of guide holes (103 c) are distributed at intervals and are communicated with the water inlet tank (103 a) and the water outlet tank (103 b).
5. A leak-proof vacuum seal with cooling as set forth in any of claims 1, 2 and 4, wherein: a second sealing ring (203) is further arranged between the shell (201) and the static ring (202), and a pipeline placing hole (S) is further formed in the side walls of the shell and the static ring.
6. A leak-proof vacuum machine seal with cooling as defined in claim 4, wherein: backflow pipeline (301) include inlet tube (301 a) and outlet pipe (301 b), inlet tube (301 a) intercommunication inlet channel (103 a) and coolant liquid case (303), outlet pipe (301 b) intercommunication outlet channel (103 b) and coolant liquid case (303).
7. A leak-proof vacuum machine seal with cooling as defined in claim 6, wherein: the water inlet pipe (301 a) is also provided with a circulating pump (301 a-1) and a control valve (301 a-2).
8. A leak-proof vacuum machine seal with cooling as set forth in any of claims 1, 2, 4 and 7, wherein: vacuum pressure subassembly (302) include vacuum pump (302 a), manometer (302 b) and liquid level monitor (302 c), vacuum pump (302 a) and manometer (302 b) communicate in the top of coolant liquid case (303), and liquid level monitor (302 c) connect in on the lateral wall of coolant liquid case (303).
9. The utility model provides a take refrigerated leak-proof vacuum machine to seal system which characterized in that: the vacuum machine seal structure of claim 1 to 8, comprising:
the dynamic unit (100) comprises a driving shaft (101) and a movable ring (102) driven by the driving shaft (101), wherein a cooling groove cavity (103) for containing cooling liquid is formed in the side wall of the movable ring (102);
a static unit (200) having a static ring (202) for single-sided sealing in cooperation with the dynamic ring (102);
the cooling sealing unit (300) comprises a return pipeline (301), a vacuum pressure assembly (302) and a cooling liquid tank (303), wherein the return pipeline (301) is communicated with the cooling tank cavity (103) and the cooling liquid tank (303) to form a complete cooling loop, and the vacuum pressure assembly (302) is used for monitoring and maintaining the vacuum state of the cooling liquid tank (303).
10. A leak-proof vacuum-sealing system with cooling as defined in claim 9, wherein: the movable ring (102) rotates synchronously with the driving shaft (101), and the movable ring (102) is attached to the side wall of the fixed ring (202) under the action of the tensioning spring (101 b).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011462404.4A CN112555415A (en) | 2020-12-14 | 2020-12-14 | Anti-leakage vacuum machine seal structure with cooling function and system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011462404.4A CN112555415A (en) | 2020-12-14 | 2020-12-14 | Anti-leakage vacuum machine seal structure with cooling function and system thereof |
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| Publication Number | Publication Date |
|---|---|
| CN112555415A true CN112555415A (en) | 2021-03-26 |
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| CN202011462404.4A Pending CN112555415A (en) | 2020-12-14 | 2020-12-14 | Anti-leakage vacuum machine seal structure with cooling function and system thereof |
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| CN (1) | CN112555415A (en) |
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| US20030140751A1 (en) * | 2001-12-28 | 2003-07-31 | Coe Newnes/Mcgehee Ulc | Saw guide pad seal |
| CN202101560U (en) * | 2011-04-13 | 2012-01-04 | 常州市天龙光电设备有限公司 | Cooling structure of furnace bottom plate |
| CN102405365A (en) * | 2009-04-23 | 2012-04-04 | 伊格尔工业股份有限公司 | Mechanical seal device |
| CN107608407A (en) * | 2017-09-06 | 2018-01-19 | 杭州华为数字技术有限公司 | A kind of negative-pressure liquid-cooling system and its control method |
| CN207364266U (en) * | 2017-11-06 | 2018-05-15 | 中油管道京磁新材料有限责任公司 | Storage tank sealing device |
| CN109642676A (en) * | 2016-06-28 | 2019-04-16 | 福斯管理公司 | Dry-running end surface mechanical sealing part |
| CN209067844U (en) * | 2018-09-11 | 2019-07-05 | 无锡全世全流体科技有限公司 | A kind of horizontal autoclave Split type mechanical seal device |
| CN110131417A (en) * | 2019-01-25 | 2019-08-16 | 宁波奉化明磊弹簧厂 | A kind of band water cooling single mechanical end face seal structure and its working method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030140751A1 (en) * | 2001-12-28 | 2003-07-31 | Coe Newnes/Mcgehee Ulc | Saw guide pad seal |
| CN102405365A (en) * | 2009-04-23 | 2012-04-04 | 伊格尔工业股份有限公司 | Mechanical seal device |
| CN202101560U (en) * | 2011-04-13 | 2012-01-04 | 常州市天龙光电设备有限公司 | Cooling structure of furnace bottom plate |
| CN109642676A (en) * | 2016-06-28 | 2019-04-16 | 福斯管理公司 | Dry-running end surface mechanical sealing part |
| CN107608407A (en) * | 2017-09-06 | 2018-01-19 | 杭州华为数字技术有限公司 | A kind of negative-pressure liquid-cooling system and its control method |
| CN207364266U (en) * | 2017-11-06 | 2018-05-15 | 中油管道京磁新材料有限责任公司 | Storage tank sealing device |
| CN209067844U (en) * | 2018-09-11 | 2019-07-05 | 无锡全世全流体科技有限公司 | A kind of horizontal autoclave Split type mechanical seal device |
| CN110131417A (en) * | 2019-01-25 | 2019-08-16 | 宁波奉化明磊弹簧厂 | A kind of band water cooling single mechanical end face seal structure and its working method |
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Application publication date: 20210326 |