CN117469435A - Check valve with scale prevention function - Google Patents
Check valve with scale prevention function Download PDFInfo
- Publication number
- CN117469435A CN117469435A CN202311465457.5A CN202311465457A CN117469435A CN 117469435 A CN117469435 A CN 117469435A CN 202311465457 A CN202311465457 A CN 202311465457A CN 117469435 A CN117469435 A CN 117469435A
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- CN
- China
- Prior art keywords
- gasket
- fixedly connected
- valve clack
- elastic element
- sliding sleeve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000002265 prevention Effects 0.000 title claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 87
- 230000007246 mechanism Effects 0.000 claims description 30
- 238000007789 sealing Methods 0.000 claims description 15
- 238000004140 cleaning Methods 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 238000009825 accumulation Methods 0.000 claims description 4
- 125000006850 spacer group Chemical group 0.000 description 22
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 20
- 238000000034 method Methods 0.000 description 13
- 230000008569 process Effects 0.000 description 13
- 229910052757 nitrogen Inorganic materials 0.000 description 10
- 230000000694 effects Effects 0.000 description 7
- 239000007789 gas Substances 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000010405 clearance mechanism Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/06—Check valves with guided rigid valve members with guided stems
- F16K15/063—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring
- F16K15/065—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring spring pulling the closure member against the seat
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
- B08B9/053—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction
- B08B9/055—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction the cleaning devices conforming to, or being conformable to, substantially the same cross-section of the pipes, e.g. pigs or moles
- B08B9/0557—Pigs with rings shaped cleaning members, e.g. cup shaped pigs
-
- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
-
- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
-
- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/46—Attachment of sealing rings
-
- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/06—Check valves with guided rigid valve members with guided stems
- F16K15/067—Check valves with guided rigid valve members with guided stems stem guided at two or more points
-
- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0209—Check valves or pivoted valves
-
- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/01—Damping of valve members
- F16K47/011—Damping of valve members by means of a dashpot
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Check Valves (AREA)
Abstract
The invention belongs to the technical field of check valves, and particularly relates to a check valve with a scale prevention function. Including the inlet tube, the inlet tube intercommunication has the outlet pipe, inlet tube fixedly connected with apron, apron sliding connection has the sliding sleeve, the inlet tube is close to one side fixedly connected with evenly arranged's of apron baffle, the sliding sleeve is kept away from one side fixedly connected with valve clack of apron, the outside of valve clack rotates there is first gasket, first gasket with inlet tube and evenly arranged the baffle all cooperates, apron sliding connection has the slide bar, slide bar fixedly connected with balancing weight, the balancing weight with first elastic element of fixedly connected with between the valve clack. According to the invention, the balancing weight automatically compresses the first elastic element, and the first elastic element always keeps stable downward pressure on the valve clack, so that the valve clack keeps a normally closed state, and the probability of backflow of hot water is reduced.
Description
Technical Field
The invention relates to the technical field of check valves, in particular to a check valve with a scale prevention function.
Background
The check valve is a valve having a unidirectional fluid passage function, and blocks the backflow of the medium by the gravity of the valve flap, the elastic force of the elastic element, and the pressure generating action of the flowing medium.
The existing check valve mainly only depends on the reserved pressure of the elastic element in assembly to apply force to the valve clack, so that the valve clack is kept in a closed state, and the elastic coefficient of the elastic element gradually decreases along with the increase of the service life of the check valve, so that the extrusion force to the valve clack is reduced, the valve clack is not tightly contacted with the valve body, and then the phenomenon of medium backflow occurs, so that the normal use of the check valve is affected.
Disclosure of Invention
In order to overcome the defects that the conventional check valve is increased along with the use time, the elastic coefficient of an elastic element is gradually reduced, so that the valve clack is not tightly contacted with the valve body, and then the medium flows backwards, and the normal use of the check valve is influenced, the invention provides the check valve with the scale prevention function.
The technical proposal is as follows: the utility model provides a check valve with scale prevention function, includes the inlet tube, the inlet tube intercommunication has the outlet pipe, inlet tube fixedly connected with apron, the apron is close to one side sliding connection of inlet tube has the sliding sleeve, the inlet tube is close to one side fixedly connected with evenly arranged's of apron baffle, the sliding sleeve is kept away from one side fixedly connected with valve clack of apron, the outside of valve clack rotates there is first gasket, first gasket with inlet tube and evenly arranged the baffle all cooperates, the apron is kept away from one side sliding connection of inlet tube has the slide bar, just the apron with there is frictional force between the slide bar, the slide bar is kept away from one end fixedly connected with balancing weight of apron, the balancing weight with fixedly connected with first elastic element between the valve clack, the inlet tube is provided with and is used for reducing the buffer gear of first elastic element deformation volume, the balancing weight is provided with and is used for right the clearance mechanism of sliding sleeve clearance.
As a further preferred aspect, a scale is provided at an end of the sliding rod remote from the water inlet pipe for observing the compression amount of the first elastic element.
As a further preference, buffer gear is including the water pipe of evenly arranging, evenly arranged the water pipe all communicate in the inlet tube, the slip cap is provided with the logical groove of evenly arranging, sliding connection has the ejector pin in the water pipe, the ejector pin is located in the last adjacent logical groove of slip cap, the ejector pin is close to the one end fixedly connected with sliding block of balancing weight, the balancing weight is provided with the first cavity of evenly arranging, first cavity intussuseption is filled with compressed medium, the sliding block is adjacent in the first cavity slip.
As a further preferred aspect, the length of the water passing pipe is greater than the distance that the adjacent ejector rods move, and the distance between the adjacent baffles is greater than the diameter of the ejector rods.
As a further preference, the cleaning mechanism comprises a first expansion piece, the first expansion piece is fixedly connected to one side, close to the sliding sleeve, of the balancing weight, the first expansion piece is matched with the sliding sleeve, the balancing weight is internally and fixedly connected with a uniformly arranged air passing shell, and the first cavity is communicated with the first expansion piece through the adjacent air passing shell.
As a further preference, the device further comprises a dislocation mechanism for preventing scale accumulation, the dislocation mechanism is arranged on the first gasket, the dislocation mechanism comprises a second gasket, the second gasket is fixedly connected to one side, away from the sliding sleeve, of the first gasket, a limit groove is formed in the inner side of the water inlet pipe, a limit rod is fixedly connected to the outer side of the first gasket, the limit rod is matched with the limit groove, an annular bulge is arranged in a region, close to the water outlet pipe, of the water inlet pipe, the annular bulge is matched with the second gasket, and a sealing mechanism is arranged on the valve clack.
As a further preferred aspect, the region where the second spacer cooperates with the annular protrusion is an arcuate surface, and the diameter of the arcuate surface gradually decreases from top to bottom.
As a further preferable mode, the limit groove is formed by connecting a straight groove and a chute, the distance between the limit groove chute and the annular protrusion is smaller than the distance between the limit groove straight groove and the annular protrusion, and the limit groove is used for enabling the second gasket and the annular protrusion to rotate relatively.
As a further preferred aspect, the sealing mechanism includes a second elastic element, the second elastic element is fixedly connected to one side of the valve clack away from the second gasket, the second gasket is provided with an annular array gas passing channel, a second expansion member is fixedly connected to the outer side of the second gasket, the second expansion member is matched with the annular protrusion, the annular array gas passing channel is communicated with the second expansion member, the valve clack and the first gasket are respectively provided with a through hole, the through hole of the valve clack is communicated with the through hole of the first gasket, the second gasket is provided with a second cavity, the second cavity is communicated with the adjacent through holes and the annular array gas passing channel, and the gas passing channel, the through holes and the second cavity are filled with a compression medium.
As a further preference, the volume of the cavity between the second resilient element and the second gasket is greater than the volume within the second expansion member.
The above-mentioned at least one technical scheme that this description embodiment adopted can reach following beneficial effect: according to the invention, the balancing weight is used for automatically compressing the first elastic element, so that the first elastic element always keeps stable downward pressure on the valve clack, and the valve clack keeps a normally closed state, thereby reducing the probability of backflow of hot water; the ejector rod is upwards extruded by part of hot water, so that the first elastic element rebounds, and the force required by part of upward movement is provided for the balancing weight, and the rebounded first elastic element reduces the downward pressure applied to the valve clack, so that the resistance of the valve clack to the water flow in the water inlet pipe is reduced, the energy loss of the water flow in the flowing process is reduced, and the transfer speed of the hot water is improved; the first expansion piece after expansion slides with the inner wall of the sliding sleeve, so that scale on the inner wall of the sliding sleeve is scraped off, the scale on the inner wall of the sliding sleeve along with the time is prevented from affecting the normal movement of the balancing weight, and the probability of blocking the balancing weight with the sliding sleeve is reduced; the chute of the limit groove enables the first gasket to deflect in the process of separating from and contacting with the annular bulge, so that the first gasket is prevented from being damaged due to vertical upward force after the first gasket contacts with the annular bulge for a long time and is adhered, scale is prevented from being accumulated in the matched area of the second gasket and the annular bulge, and the protection effect on the first gasket and the sealing effect between the second gasket and the annular bulge are improved; the second elastic element is extruded downwards by hot water, so that the second expansion piece expands and a gap between the second gasket and the annular bulge is blocked, and the tightness between the second gasket and the annular bulge is further ensured.
Drawings
FIG. 1 is a schematic perspective view of the whole structure of the present invention;
FIG. 2 is a schematic perspective view of the parts in the water inlet pipe and the water outlet pipe of the invention;
FIG. 3 is a schematic perspective view of a buffer mechanism according to the present invention;
FIG. 4 is a schematic perspective view of a cleaning mechanism according to the present invention;
FIG. 5 is a schematic view showing a perspective structure of the first spacer of the present invention when it moves upward;
FIG. 6 is an exploded view of a three-dimensional structure of the dislocation mechanism of the present invention;
FIG. 7 is a schematic perspective view of a second expansion member of the present invention when expanded;
fig. 8 is an exploded view of the three-dimensional structure of the dislocation mechanism and the sealing mechanism of the present invention.
Reference numerals illustrate: 1-water inlet pipe, 2-water outlet pipe, 3-cover plate, 4-sliding sleeve, 5-baffle, 6-valve clack, 7-first gasket, 8-sliding rod, 9-balancing weight, 10-first elastic element, 11-buffer mechanism, 1101-water passing pipe, 1102-ejector pin, 1103-sliding block, 1104-first cavity, 12-cleaning mechanism, 1201-first expansion piece, 1202-air passing shell, 13-dislocation mechanism, 1301-second gasket, 1302-limit groove, 1303-limit rod, 1304-annular bulge, 14-sealing mechanism, 1401-second elastic element, 1402-air passing channel, 1403-second expansion piece, 1404-through hole, 1405-second cavity.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments, based on which all other embodiments, which a person having ordinary skill in the art may obtain without inventive effort, belong to the scope of protection of the present invention, although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principle and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Example 1: 1-5, including the inlet tube 1, the right side of the inlet tube 1 communicates with the outlet tube 2, the upside of the inlet tube 1 fixedly connects with the cover plate 3, the underside of the cover plate 3 slides and connects with the sliding sleeve 4, the upper portion of the inner wall of the inlet tube 1 fixedly connects with three baffle plates 5 which are evenly arranged, the underside of the sliding sleeve 4 fixedly connects with the valve clack 6, the outside of the valve clack 6 rotates and has the first gasket 7, the first gasket 7 is copper, the first gasket 7 cooperates with the inlet tube 1 and three baffle plates 5, the communicating state of the inlet tube 1 and the outlet tube 2 is changed by the first gasket 7 and the inlet tube 1 contacting or not, the upper side of the cover plate 3 slides and connects with the sliding rod 8, and there is friction force between the cover plate 3 and the sliding rod 8, the friction force equals the gravity of the sliding rod 8, the upper end of the sliding rod 8 is provided with the scale, the scale is used for observing the compression amount of the first elastic element 10 to this is convenient for change by the first elastic element 10 of compression limit, and the lower extreme fixedly connected with balancing weight 9 of slide bar 8, fixedly connected with first elastic element 10 between balancing weight 9 and the valve clack 6, and first elastic element 10 is the spring, and first elastic element 10 is in compression state, inlet tube 1 is provided with the buffer gear 11 that is used for reducing first elastic element 10 deflection, and balancing weight 9 is provided with the clearance mechanism 12 that is used for carrying out the clearance to sliding sleeve 4, compresses first elastic element 10 in order to provide down force to valve clack 6 through balancing weight 9, prevents to make the contact between first gasket 7 and the inlet tube 1 inseparable with the lapse of time, with this sealed effect that improves between inlet tube 1 and the valve clack 6.
As shown in fig. 3-5, the buffer mechanism 11 includes three water passing pipes 1101 which are uniformly arranged, the three water passing pipes 1101 which are uniformly arranged are all communicated with the water inlet pipe 1, the sliding sleeve 4 is provided with three through grooves which are uniformly arranged, the water passing pipes 1101 are internally and slidably connected with ejector rods 1102 in a sealing manner, the ejector rods 1102 are positioned in the adjacent through grooves on the sliding sleeve 4, the length of each water passing pipe 1101 is longer than the upward and downward moving distance of the adjacent ejector rods 1102, so that the ejector rods 1102 are prevented from being separated from the adjacent water passing pipes 1101 in the upward and downward moving process, the distance between the adjacent baffle plates 5 is longer than the diameter of each ejector rod 1102, the ejector rods 1102 can conveniently move up and down normally, the upper ends of the ejector rods 1102 are fixedly connected with sliding blocks 1103, the sliding blocks 9 are provided with three first cavities 1104 which are uniformly arranged, compressed media are filled in the first cavities 1104, the compressed media are nitrogen, the sliding blocks 1103 slide in the adjacent first cavities 1104, the compressed nitrogen gas upwards to extrude the sliding blocks 9, the first elastic elements 10 rebound, and provide partial upward moving force for the sliding blocks 9, so that the first elastic elements 10 are prevented from separating from the valve flaps 6, the downward pressure exerted on the valve flaps 6 is reduced, the water flow in the process, the water flow through the water inlet pipe is reduced, the water flow loss is reduced, and the water flow loss is reduced in the process.
As shown in fig. 3 and fig. 4, the cleaning mechanism 12 includes a first expansion member 1201, the first expansion member 1201 is fixedly connected to the outer side of the counterweight 9, the first expansion member 1201 is a hollow elastic rubber ring, the first expansion member 1201 is matched with the sliding sleeve 4, the expanded first expansion member 1201 contacts with the inner wall of the sliding sleeve 4, scales appearing on the inner wall of the sliding sleeve 4 are scraped off by the first expansion member 1201 moving up and down, three air passing shells 1202 uniformly arranged are fixedly connected in the counterweight 9, the first cavity 1104 is communicated with the first expansion member 1201 through the adjacent air passing shells 1202, and scales appearing on the inner wall of the sliding sleeve 4 are scraped off by the first expansion member 1201, so that the influence on the normal movement of the counterweight 9 caused by the scales on the inner wall of the sliding sleeve 4 is avoided, and the probability of blocking the counterweight 9 and the sliding sleeve 4 is reduced.
Before the invention is used, the invention is connected to a pipeline system for conveying hot water by a worker, in the process of using the invention, when hot water is injected into the water inlet pipe 1, the hot water continuously gathers in the water inlet pipe 1, when the liquid level of the hot water rises to be in contact with the first gasket 7, the first gasket 7 is pressed upwards by the hot water, then the first gasket 7 starts to move upwards, the first gasket 7 drives the valve clack 6 to move upwards together, the valve clack 6 drives the sliding sleeve 4 to move upwards together with the first elastic element 10, the sliding sleeve 4 slides with the cover plate 3, the first elastic element 10 drives the balancing weight 9 to move upwards together with the sliding rod 8, the balancing weight 9 slides with the sliding rod 8 until the first gasket 7 moves upwards to be in contact with the three baffles 5, the water inlet pipe 1 and the water outlet pipe 2 are in a communicating state, and the hot water starts to flow from the water inlet pipe 1 to the water outlet pipe 2.
With the increase of the service life of the invention, as the first elastic element 10 is subjected to repeated stress, fatigue damage can be gradually generated, so that the elastic coefficient of the first elastic element 10 is gradually reduced, at the moment, the deformation amount of the first elastic element 10 is insufficient to support the balancing weight 9, the balancing weight 9 drives the sliding rod 8 to move downwards together with the cover plate 3 along with the downward movement of the balancing weight 9 under the action of gravity, the sliding rod 8 slides with the cover plate 3, the balancing weight 9 further compresses the first elastic element 10, so as to keep the downward pressure provided by the first elastic element 10 on the valve clack 6, the contact between the first gasket 7 and the water inlet pipe 1 is not tight due to the reduction of the elastic coefficient of the first elastic element 10 along with the time, and the hot water in the water outlet pipe 2 flows back into the water inlet pipe 1, so that the normal use of the check valve is influenced, and after the balancing weight 9 compresses the first elastic element 10 to the limit position, a maintainer confirms whether the first elastic element 10 needs to be replaced through the numerical value of the scale on the sliding rod 8.
In the process of injecting hot water into the water inlet pipe 1, a part of hot water enters the adjacent water passing pipe 1101, then the part of hot water upwards presses the adjacent ejector rod 1102, the ejector rod 1102 starts to upwards slide along the adjacent water passing pipe 1101, the ejector rod 1102 drives the adjacent sliding block 1103 to upwards move together, the sliding block 1103 starts to upwards slide in the adjacent first cavity 1104, nitrogen in the first cavity 1104 is compressed, meanwhile, the compressed nitrogen upwards presses the balancing weight 9, the balancing weight 9 starts to upwards move relative to the sliding sleeve 4, the first elastic element 10 rebounds, so that the force required by the part of upward movement is provided for the balancing weight 9, the lower pressure applied to the valve clack 6 is reduced by the rebounded first elastic element 10, the resistance of the valve clack 6 to water flow in the water inlet pipe 1 is reduced, the energy loss of the water flow in the flowing process is reduced, and the transfer speed of the hot water is improved.
In the process of upward movement of the sliding block 1103, nitrogen in the first cavity 1104 enters the first expansion member 1201 through the adjacent gas passing shell 1202, the first expansion member 1201 starts to expand, then the first expansion member 1201 contacts with the inner wall of the sliding sleeve 4, then in the process of upward movement of the balancing weight 9, the balancing weight 9 drives the first expansion member 1201 to move upward together, the first expansion member 1201 slides with the inner wall of the sliding sleeve 4, the first expansion member 1201 scrapes off scale on the inner wall of the sliding sleeve 4, and then the fallen scale is taken away by water flow, so that the influence of the scale on the inner wall of the sliding sleeve 4 along with the time to the normal movement of the balancing weight 9 is avoided, and the probability of blocking the balancing weight 9 with the sliding sleeve 4 is reduced.
After the hot water is stopped from being injected into the water inlet pipe 1, the first gasket 7 and the ejector rod 1102 lose the extrusion force of the hot water, the first gasket 7 and the ejector rod 1102 start to move downwards, and the first gasket 7 and the ejector rod 1102 respectively drive the parts on the first gasket 7 and the ejector rod 1102 to move downwards together until the first gasket 7 interrupts the communication state of the water inlet pipe 1 and the water outlet pipe 2 again.
Example 2: on the basis of the embodiment 1, as shown in fig. 5-8, the utility model also comprises a dislocation mechanism 13 for preventing scale accumulation, the dislocation mechanism 13 is arranged on the first gasket 7, the dislocation mechanism 13 comprises a second gasket 1301, the second gasket 1301 is fixedly connected with the lower side of the first gasket 7, the inner side of the water inlet pipe 1 is provided with a limit groove 1302, the limit groove 1302 is formed by connecting a straight groove and a chute, the rear end of the chute of the limit groove 1302 is higher than the front end, the lower end of the straight groove of the limit groove 1302 is communicated with the rear end of the chute of the limit groove 1302, the rear part of the left side of the first gasket 7 is fixedly connected with a limit rod 1303 which is in limit fit with the limit groove 1302, the limit rod 1303 is extruded through the limit groove 1302 to enable the limit rod 1303 to move correspondingly, the area of the water inlet pipe 1 close to the water outlet pipe 2 is provided with an annular bulge 1304, the limit groove 1302 is positioned above the annular bulge 1304, and the distance between the chute of the limit groove 1302 and the annular bulge 1304 is smaller than the distance between the straight groove of the limit groove 1302 and the annular bulge 1304, the limit groove 1302 is used for enabling the second gasket 1301 to rotate relative to the annular bulge 1304, the annular bulge 1304 is matched with the second gasket 1301, the region where the second gasket 1301 is matched with the annular bulge 1304 is an arc surface, the sealing performance between the two is improved by increasing the contact area between the annular bulge 1304 and the second gasket 1301, the diameter of the arc surface is gradually reduced from top to bottom, the valve clack 6 is provided with a sealing mechanism 14, the chute of the limit groove 1302 is used for enabling the first gasket 7 to deflect in the process of separating and contacting with the annular bulge 1304, the first gasket 7 is prevented from being damaged due to the vertical upward force after the first gasket 7 contacts with the annular bulge 1304 for a long time, scale is prevented from accumulating in the region where the second gasket 1301 is matched with the annular bulge 1304, thereby improving the protection of the first gasket 7 and the sealing effect between the second gasket 1301 and the annular projection 1304.
As shown in fig. 5, 7 and 8, the sealing mechanism 14 comprises a second elastic element 1401, the second elastic element 1401 is fixedly connected to the middle part of the upper side of the valve clack 6, the second elastic element 1401 is an elastic rubber pad, the second gasket 1301 is provided with four air passing channels 1402 in an annular array, the outer side of the second gasket 1301 is fixedly connected with a second expansion member 1403, the second expansion member 1403 is a hollow elastic rubber ring, the second expansion member 1403 is matched with the annular bulge 1304, the second expansion member 1403 is contacted with the annular bulge 1304 through the second expansion member 1403, the sealing area of the annular bulge 1304 is further increased, the sealing effect is improved, the four air passing channels 1402 are communicated with the second expansion member 1403, the valve clack 6 and the first gasket 7 are provided with through holes 1404, the through holes 1404 of the valve clack 6 are communicated with the through holes 1404 of the first gasket 7, the distance between the upper and lower of second expansion piece 1403 is less than the distance between the upper and lower of through hole 1404, the volume of the cavity between second elastic element 1401 and second gasket 1301 is greater than the volume in second expansion piece 1403, thereby increase the expansion ratio of second expansion piece 1403, improve sealed effect, second gasket 1301 is provided with second cavity 1405, second cavity 1405 all communicates with adjacent through hole 1404 and four air passage 1402, all fill compressed medium in air passage 1402, through hole 1404 and second cavity 1405, compressed medium is nitrogen, through the expansion takes place after the nitrogen extrusion second expansion piece 1403, make the second expansion piece 1403 that takes place the expansion further carry out shutoff with the gap that exists between second gasket 1301 and the annular protrusion 1304, and then further guarantee the leakproofness between second gasket 1301 and the annular protrusion 1304.
In the process that the first gasket 7 moves upwards, the first gasket 7 drives the limiting rod 1303 to move upwards together, the limiting rod 1303 slides in the limiting groove 1302, then the chute of the limiting groove 1302 starts to press the limiting rod 1303 backwards, the limiting rod 1303 starts to deflect backwards, the limiting rod 1303 drives the first gasket 7 to deflect backwards together, the first gasket 7 and the valve clack 6 rotate oppositely, the first gasket 7 drives the second gasket 1301 to deflect backwards together, and the first gasket 7 is prevented from being damaged due to vertical upward force after the first gasket 7 contacts with the annular protrusion 1304 for a long time, so that protection of the first gasket 7 is improved.
As the first spacer 7 continues to move upwards, after the spacer 1303 enters the straight groove of the spacer 1302, the first spacer 7 stops deflecting, in the process that the first spacer 7 and the upper part thereof move downwards, the spacer 1303 slides downwards in the straight groove of the spacer 1302, after the spacer 1303 enters the chute of the spacer 1302, the chute of the spacer 1302 presses the spacer 1303 forwards, then the spacer 1303 starts to deflect forwards, the spacer 1303 drives the first spacer 7 and the upper part thereof to deflect forwards together, after the second spacer 1301 contacts with the annular protrusion 1304, as the first spacer 1301 continues to move downwards, the second spacer 1301 rotates relative to the annular protrusion 1304, the second spacer 1301 drives scale adhered to the annular protrusion 1304 to break the adhesion state between the scale and the annular protrusion 1304, and when the second spacer 1301 is separated from the annular protrusion 1304 again, the scale is prevented from being accumulated, so that a gap exists between the second spacer 1301 and the annular protrusion 1304 due to the accumulation of the scale, thereby improving the sealing effect.
After water injection into the water inlet pipe 1 is stopped and the second expansion member 1403 is in contact with the annular protrusion 1304, hot water in the water outlet pipe 2 begins to press the second elastic element 1401 downwards, the second elastic element 1401 begins to concave downwards, meanwhile, the second elastic element 1401 presses nitrogen in the adjacent through hole 1404, the compressed nitrogen enters the air passing channel 1402 after passing through the second cavity 1405, the nitrogen enters the second expansion member 1403 after passing through the air passing channel 1402, the second expansion member 1403 begins to expand under the pressing of the nitrogen, and then the second expansion member 1403 which expands further seals gaps existing between the second gasket 1301 and the annular protrusion 1304, so that the tightness between the second gasket 1301 and the annular protrusion 1304 is further ensured.
Although specific embodiments have been described above, these embodiments are not intended to limit the scope of the disclosure, even where only a single embodiment is described with respect to a particular feature. The characteristic examples provided in the present disclosure are intended to be illustrative, not limiting, unless stated differently. In practice, the features of one or more of the dependent claims may be combined with the features of the independent claims where technically possible, according to the actual needs, and the features from the respective independent claims may be combined in any appropriate way, not merely by the specific combinations enumerated in the claims.
Claims (10)
1. The check valve with the scale prevention function is characterized by comprising a water inlet pipe (1), the water inlet pipe (1) is communicated with a water outlet pipe (2), the water inlet pipe (1) is fixedly connected with a cover plate (3), one side of the cover plate (3) is close to a sliding sleeve (4) which is connected with a baffle plate (5) which is uniformly arranged, one side of the water inlet pipe (1) is close to the cover plate (3), the sliding sleeve (4) is far away from one side of the cover plate (3) and is fixedly connected with a valve clack (6), the outer side of the valve clack (6) is rotated with a first gasket (7), the first gasket (7) is matched with the water inlet pipe (1) and the baffle plate (5) which are uniformly arranged, one side of the cover plate (3) is far away from the water inlet pipe (1) and is connected with a sliding rod (8) in a sliding manner, friction force exists between the cover plate (3) and the sliding rod (8), one end of the sliding rod (8) is far away from the cover plate (3) is fixedly connected with a balancing weight (9), the valve clack (9) is rotated with the outer side of the valve clack (6) and the valve clack (6) is fixedly connected with a first elastic element (10) which is provided with a buffer element (10), the balancing weight (9) is provided with a cleaning mechanism (12) for cleaning the sliding sleeve (4).
2. A non-return valve with a water-scale prevention function according to claim 1, characterized in that the end of the sliding rod (8) remote from the water inlet pipe (1) is provided with a scale for observing the compression of the first elastic element (10).
3. The check valve with the scale prevention function according to claim 1, wherein the buffer mechanism (11) comprises water passing pipes (1101) which are uniformly arranged, the water passing pipes (1101) which are uniformly arranged are all communicated with the water inlet pipe (1), the sliding sleeve (4) is provided with through grooves which are uniformly arranged, ejector rods (1102) are connected in the water passing pipes (1101) in a sliding mode, the ejector rods (1102) are located in the adjacent through grooves on the sliding sleeve (4), one ends, close to the balancing weights (9), of the ejector rods (1102) are fixedly connected with sliding blocks (1103), first cavities (1104) which are uniformly arranged are formed in the balancing weights (9), and compressed media are filled in the first cavities (1104), and the sliding blocks (1103) slide in the adjacent first cavities (1104).
4. A non-return valve with a scale preventing function according to claim 3, characterized in that the length of the water passing pipe (1101) is longer than the distance moved by the adjacent ejector pins (1102), and the distance between the adjacent baffles (5) is longer than the diameter of the ejector pins (1102).
5. A check valve with a scale prevention function according to claim 3, wherein the cleaning mechanism (12) comprises a first expansion member (1201), the first expansion member (1201) is fixedly connected to one side of the balancing weight (9) close to the sliding sleeve (4), the first expansion member (1201) is matched with the sliding sleeve (4), a gas passing shell (1202) which is uniformly arranged is fixedly connected in the balancing weight (9), and the first cavity (1104) is communicated with the first expansion member (1201) through the adjacent gas passing shell (1202).
6. A check valve with scale prevention function according to claim 3, further comprising a dislocation mechanism (13) for preventing scale accumulation, wherein the dislocation mechanism (13) is arranged on the first gasket (7), the dislocation mechanism (13) comprises a second gasket (1301), the second gasket (1301) is fixedly connected to one side of the first gasket (7) away from the sliding sleeve (4), a limit groove (1302) is formed in the inner side of the water inlet pipe (1), a limit rod (1303) is fixedly connected to the outer side of the first gasket (7), the limit rod (1303) is matched with the limit groove (1302), an annular protrusion (1304) is arranged in a region, close to the water outlet pipe (2), of the water inlet pipe (1) and is matched with the second gasket (1301), and a sealing mechanism (14) is arranged on the valve clack (6).
7. The check valve with scale prevention function according to claim 6, wherein the region where the second gasket (1301) is fitted with the annular protrusion (1304) is an arc surface, and the diameter of the arc surface is gradually reduced from top to bottom.
8. The check valve with the scale prevention function according to claim 6, wherein the limiting groove (1302) is formed by connecting a straight groove and a chute, and a distance between the chute of the limiting groove (1302) and the annular protrusion (1304) is smaller than a distance between the straight groove of the limiting groove (1302) and the annular protrusion (1304), and the limiting groove (1302) is used for enabling the second gasket (1301) to rotate relative to the annular protrusion (1304).
9. The check valve with the scale prevention function according to claim 6, wherein the sealing mechanism (14) comprises a second elastic element (1401), the second elastic element (1401) is fixedly connected to one side of the valve clack (6) away from the second gasket (1301), the second gasket (1301) is provided with an annular array of air passing channels (1402), a second expansion member (1403) is fixedly connected to the outer side of the second gasket (1301), the second expansion member (1403) is matched with the annular protrusion (1304), the annular array of air passing channels (1402) are communicated with the second expansion member (1403), the valve clack (6) and the first gasket (7) are provided with through holes (1404), the through holes (1404) of the valve clack (6) are communicated with the through holes (1404) of the first gasket (7), the second gasket (1301) is provided with a second cavity (1405), and the second cavity (1405) is communicated with the adjacent annular array of air passing channels (1402), the second cavity (1404) and the air passing channels (1404) are filled with media.
10. The scale-proof check valve according to claim 9, wherein the volume of the cavity between the second elastic element (1401) and the second gasket (1301) is larger than the volume in the second expansion member (1403).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311465457.5A CN117469435A (en) | 2023-11-07 | 2023-11-07 | Check valve with scale prevention function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311465457.5A CN117469435A (en) | 2023-11-07 | 2023-11-07 | Check valve with scale prevention function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117469435A true CN117469435A (en) | 2024-01-30 |
Family
ID=89639256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311465457.5A Pending CN117469435A (en) | 2023-11-07 | 2023-11-07 | Check valve with scale prevention function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117469435A (en) |
-
2023
- 2023-11-07 CN CN202311465457.5A patent/CN117469435A/en active Pending
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