Valve seat

Abstract

The utility model discloses a valve seat which comprises a valve seat body and a pretreatment mechanism, the pretreatment mechanism comprises a connecting cylinder, the connecting cylinder is detachably installed at one end of the valve seat body, an installation shell is fixedly connected to the connecting cylinder, and a filtering mechanism is installed in the installation shell. The filtering mechanism can filter fluid when the fluid enters the valve seat body, the filtering mechanism comprises a first connecting rod, the first connecting rod penetrates through one end of the mounting shell, a mounting plate is mounted in the mounting shell, two mounting holes matched with the connecting cylinders are formed in the mounting plate, and the connecting cylinders are arranged in the mounting holes. And a filter screen matched with the mounting hole is mounted on the mounting plate. Compared with the prior art, the valve seat has a filtering function, can reduce the influence of friction between impurities and a valve element on a valve, can reduce the situation that the impurities enter equipment without a filtering mechanism, and is beneficial to reducing the situation that the impurities influence the performance of the equipment.

Description

TECHNICAL FIELD

[0001] The utility model belongs to valve technical field, and specifically relates to a valve seat. BACKGROUND

[0002] In industrial and fluid handling applications, valves are widely used key components for controlling the flow and pressure of fluids. The design of valve seat and valve core is crucial to ensure the accurate control of fluid flow. Traditional valve seats are usually used to install valve cores and can adapt to the control needs of fluid flow in different occasions.

[0003] Although the existing valve seat design meets the needs of most scenarios, some design problems still exist when dealing with low flow rate and low pressure fluids. For example, many existing valve seat designs do not have additional filtering function, which can easily cause particles or impurities in low flow rate and low pressure fluids to enter the valve core part through the valve seat, especially hard impurities, which can easily wear out the valve core by long-term contact with the valve core, thereby affecting the service life of the valve. Moreover, for devices without a pre-filtering mechanism, impurities can easily enter the device through the valve, which can affect the performance of the device during operation.

[0004] The information disclosed in this BACKGROUND section is only intended to increase an understanding of the general background of the present utility model and is not intended to be a recognition or any form of suggestion that this information forms prior art that is already known to those of ordinary skill in the art. SUMMARY

[0005] The utility model aims at providing a valve seat which can solve the technical problems raised in the above background.

[0006] In order to achieve the above-mentioned purpose, the technical scheme provided by one embodiment of the utility model is as follows:

[0007] A valve seat, comprising a valve seat body and a pretreatment mechanism, the pretreatment mechanism comprising a connecting cylinder, the connecting cylinder being detachably installed at one end of the valve seat body, the connecting cylinder being fixedly connected with a mounting shell, the mounting shell being installed with a filtering mechanism, the filtering mechanism being capable of filtering fluid when the fluid enters the valve seat body.

[0008] In one or more embodiments of the utility model, the filtering mechanism comprises a first connecting rod, one end of the first connecting rod penetrating through the mounting shell, the mounting shell being installed with a mounting plate, the mounting plate having two mounting holes matched with the connecting cylinder, the mounting plate being installed with a filter screen matched with the mounting hole, the mounting shell having two replacement warehouses matched with the mounting hole, and the two replacement warehouses being symmetrically arranged at both ends of the connecting cylinder.

[0009] In one or more embodiments of the utility model, the outer wall of the filter screen is fixedly connected with a connecting lug, the connecting lug is inserted into the mounting plate, and the mounting plate is threadedly connected with a second bolt, one end of the second bolt penetrates through the connecting lug.

[0010] In one or more embodiments of the utility model, the connecting cylinder is fixedly connected with a plurality of first sealing rings matched with the mounting plate.

[0011] In one or more embodiments of the utility model, the mounting shell is provided with an observation window, and the mounting shell is rotatably connected with a protective door matched with the observation window.

[0012] In one or more embodiments of the utility model, one end of the valve seat body is provided with a first connecting disc, the other end of the valve seat body away from the first connecting disc is provided with a second connecting disc, the connecting cylinder is fixedly connected with a fifth connecting disc matched with the second connecting disc, one end of the connecting cylinder away from the fifth connecting disc is fixedly connected with a fourth connecting disc, the fifth connecting disc is threadedly connected with a first bolt, and the first bolt penetrates through the second connecting disc and is threadedly connected with a nut.

[0013] In one or more embodiments of the utility model, the pretreatment mechanism comprises a cleaning mechanism, and the cleaning mechanism is used for cleaning impurities on the filtering mechanism.

[0014] In one or more embodiments of the utility model, the cleaning mechanism comprises a sleeve, one end of the sleeve penetrates through the mounting shell and the connecting cylinder, a blocking cover is installed in the connecting cylinder, a plurality of cleaning brushes are fixedly connected to the outer wall of the blocking cover, and the upper end of the blocking cover is fixedly connected with the lower end of the sleeve.

[0015] In one or more embodiments of the utility model, a second connecting rod is slidably connected in the sleeve, one end of the second connecting rod is located in the blocking cover, one end of the second connecting rod located in the blocking cover is fixedly connected with a mounting portion, and a plurality of crushing teeth are fixedly connected to the mounting portion.

[0016] In one or more embodiments of the utility model, the upper end of the valve seat body is provided with a fourth connecting disc.

[0017] Compared with the prior art, the valve seat has a filtering effect, can reduce the influence of impurities and friction of the valve core on the valve, can reduce the entry of impurities into the equipment for the equipment without a filtering mechanism, and is beneficial to reducing the influence of impurities on the performance of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is a schematic diagram of the structure of a valve seat in one embodiment of the utility model. Figure 1 ;

[0020] Figure 2 This is a schematic diagram of the structure of a valve seat in one embodiment of the utility model. Figure 2 ;

[0021] Figure 3 This is a schematic diagram of the structure of a valve seat in one embodiment of the utility model. Figure 3 ;

[0022] Figure 4 This is a schematic diagram of an explosion structure of a valve seat in one embodiment of the present utility model;

[0023] Figure 5 This is a cross-sectional view of a valve seat in one embodiment of the present utility model;

[0024] Figure 6 for Figure 5 Schematic diagram of the structure at A in the middle;

[0025] Figure 7 for Figure 5 Schematic diagram of the structure at point B in the middle.

[0026] Description of main reference numerals:

[0027] 1. Valve seat body; 101. First connecting disk; 102. Second connecting disk; 103. Third connecting disk; 2. Pretreatment mechanism; 3. Connecting cylinder; 301. Fourth connecting disk; 302. Fifth connecting disk; 4. First bolt; 5. Nut; 6. Mounting shell; 601. Observation window; 602. Maintenance port; 7. Protective door; 8. Filter mechanism; 9. First connecting rod; 10. Mounting plate; 11. Filter screen; 1101. Connecting ear; 12. Second bolt; 13. First sealing ring; 14. Cleaning mechanism; 15. Sleeve; 16. Blocking cover; 1601. Cleaning brush; 17. Second connecting rod; 18. Mounting part; 19. Crushing tooth; 20. Second sealing ring; 21. Third sealing ring. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the following will be combined with the drawings of the embodiments of the present invention to clearly and completely describe the technical solutions of the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0029] like Figures 1 to 4 As shown, a valve seat in one embodiment of the present invention includes a valve seat body 1, with a first connection plate 101 and a second connection plate 102 fixedly connected to the left and right ends of the valve seat body 1, respectively, and a third connection plate 103 fixedly connected to the upper end of the valve seat body 1. The third connection plate 103 is used to mount the valve core, and the first connection plate 101 is used to mount the pipeline. A pretreatment mechanism 2 is detachably mounted on the second connection plate 102. The pretreatment mechanism 2 is capable of filtering impurities in the fluid passing through the pretreatment mechanism 2, reducing the amount of impurities in the fluid entering the valve seat body 1, reducing the wear of the valve core mounted on the valve seat by impurities, and helping to extend the service life of the valve.

[0030] like Figures 1 to 4 As shown, the pretreatment mechanism 2 includes a connecting tube 3, one end of the connecting tube 3 is fixedly connected to the fourth connecting disk 301, and the end of the connecting tube 3 away from the fourth connecting disk 301 is fixedly connected to the fifth connecting disk 302, and the fifth connecting disk 302 is threadedly connected to the first bolt 4, and the first bolt 4 passes through the second connecting disk 102 and is threadedly connected to the nut 5, that is, the connecting tube 3 and the valve seat body 1 are detachably installed by the first bolt 4 and the nut 5.

[0031] like Figures 1 to 6As shown, the connecting cylinder 3 is fixedly connected with a mounting shell 6, and the mounting shell 6 has two replacement chambers which are symmetrically arranged on the valve seat body 1. A filtering mechanism 8 is arranged in the mounting shell 6, and the filtering mechanism 8 can filter the fluid entering the pretreatment mechanism 2. The filtering mechanism 8 comprises a first connecting rod 9, one end of the first connecting rod 9 penetrates through the mounting shell 6, and the one end of the first connecting rod 9 is located in the mounting shell 6. The one end of the first connecting rod 9 located in the mounting shell 6 is fixedly connected with a mounting plate 10, the mounting plate 10 has two mounting holes, and a filter screen 11 matched with the mounting holes is arranged on the mounting plate 10. The first connecting rod 9 can slide up and down on the mounting shell 6, and during the sliding process, the positions of the mounting holes change with the positions of the replacement chambers, that is, the upper mounting hole is accommodated in the upper replacement chamber and the other mounting hole is located at a position matched with the inner diameter of the pretreatment mechanism 2 by pulling the first connecting rod 9 upward. Conversely, the lower mounting hole is accommodated in the lower replacement chamber and the other mounting hole is located at a position matched with the inner diameter of the pretreatment mechanism 2. That is, during the replacement of the filter screen 11, the pretreatment mechanism 2 can continue to deliver fluid and filter the fluid.

[0032] Specifically, as shown in the figure, Figures 1 to 6 The outer wall of the filter screen 11 is fixedly connected with a connecting lug 1101, and the connecting lug 1101 can be inserted into the inner wall of the mounting plate 10. Generally, the connecting lug 1101 is inserted into the mounting plate 10 in the form of a jack. One side of the mounting plate 10 is threadedly connected with a second bolt 12, one end of the second bolt 12 penetrates through the connecting lug 1101, and the filter screen 11 and the mounting plate 10 are further fixed.

[0033] As shown in the figure, Figures 1 to 4 An observation window 601 is arranged on the mounting shell 6, and through the observation window 601, the filter screen 11 and the amount of impurities in the mounting shell 6 can be observed. If there is too much impurity, the mounting shell 6 and the filter screen 11 can be cleaned. A maintenance opening 602 matched with the replacement chamber is arranged on the mounting shell 6, and a protective door 7 matched with the maintenance opening 602 is rotatably connected to the mounting shell 6. Under normal circumstances, the protective door 7 can completely close the maintenance opening 602. When the filter screen 11 needs to be replaced, the protective door 7 is opened, and the filter screen 11 in the replacement chamber can be replaced through the maintenance opening 602.

[0034] As shown in the figure, Figures 1 to 6 The connecting cylinder 3 is further fixedly connected with a first sealing ring 13 matched with the mounting plate 10, and the first sealing ring 13 can largely avoid the situation of liquid leakage during filtering by one filter screen 11.

[0035] In order to realize the self-cleaning of the impurities in the pretreatment mechanism 2, that is, the pretreatment mechanism 2 can be cleaned without disassembling the pretreatment mechanism 2. The pretreatment mechanism 2 further comprises a cleaning mechanism 14, which can clean the filter screen 11 and can crush the impurities filtered by the filter screen 11, so that the particle size of the impurities is smaller, and the impurities can pass through the filter screen 11, thereby realizing the cleaning of the impurities.

[0036] As shown in Figures 1 to 7 , the cleaning mechanism 14 comprises a sleeve 15, one end of the sleeve 15 passes through the mounting shell 6, and the one end of the sleeve 15 is located in the mounting shell 6. The one end of the sleeve 15 located in the mounting shell 6 is fixedly connected with a blocking cover 16, the outer wall of the blocking cover 16 is fixedly connected with a plurality of cleaning brushes 1601, and the sleeve 15 and the mounting shell 6 are rotatably connected and can slide up and down at the same time. By rotating the sleeve 15 or sliding the sleeve 15 up and down, the blocking cover 16 and the cleaning brushes 1601 can be moved, the cleaning brushes 1601 can be in contact with the filter screen 11, and the impurities on the filter screen 11 can be removed.

[0037] As shown in Figures 1 to 7 , the sleeve 15 is slidably connected with a second connecting rod 17, one end of the second connecting rod 17 is located in the interior of the blocking cover 16, one end of the second connecting rod 17 located in the inner wall of the blocking cover 16 is fixedly connected with a mounting portion 18, and the mounting portion 18 is fixedly connected with a plurality of crushing teeth 19. The bottom wall of the blocking cover 16 can be in contact with the inner wall of the connecting cylinder 3, and the inner wall of the connecting cylinder 3 is provided with a sinking groove matched with the blocking cover 16. During the downward movement of the blocking cover 16, the impurities filtered by the filter screen 11 can be collected in the interior of the blocking cover 16. The second connecting rod 17 with the mounting portion 18 and the crushing teeth 19 rotates and stirs in the blocking cover 16, so that the impurities in the blocking cover 16 can be crushed, the impurities in the blocking cover 16 can be crushed into particles with a size conforming to the screen size of the filter screen 11, and the impurities can pass through the filter screen 11 and enter the pipeline. At this time, the output end of the pipeline is disconnected from the equipment, and after the impurities are discharged, the output end of the pipeline is connected with the equipment. That is, the impurities in the valve can be treated without disassembling the valve.

[0038] In order to ensure the sealing of the cleaning mechanism 14 and the connecting cylinder 3, as shown in Figures 6 and 7 , the inner wall of the connecting cylinder 3 is fixedly connected with a second sealing ring 20 matched with the sleeve 15, and the inner wall of the sleeve 15 is fixedly connected with a third sealing ring 21 matched with the second connecting rod 17. The third sealing ring 21 and the second sealing ring 20 cooperate to greatly avoid the situation that the fluid in the valve flows out from the gap between the cleaning mechanism 14 and the connecting cylinder 3.

[0039] In use, first, the pretreatment mechanism 2 and the valve seat body 1 are assembled, the pretreatment mechanism 2 and the valve seat body 1 are assembled, and then the valve core is installed on the valve seat, and the pipeline is connected at both ends of the valve. After the fluid is introduced, the fluid passes through the filter screen 11, and the filter screen 11 can filter the impurities in the fluid, reducing the influence of impurities on the valve core and subsequent equipment. When the filter screen 11 is used for a long time and needs to be disassembled and replaced, first, the first connecting rod 9 is pulled to move the first connecting rod 9 with the mounting plate 10, and the mounting plate 10 moves with the filter screen 11, changes the position of the unused filter screen 11 and the used filter screen 11, and the used filter screen 11 is located in the replacement bin, then the protective door 7 is opened, and the filter screen 11 in the replacement bin is replaced.

[0040] If it is necessary to clean the impurities in the pretreatment mechanism 2, first, slide the sleeve 15 up and down, and the sleeve 15 moves up and down or rotates with the blocking cover 16, and the cleaning brush 1601 acts on the filter screen 11 to remove the impurities on the filter screen 11. Then the blocking cover 16 can collect part of the impurities. By sliding the second connecting rod 17 up and down in the sleeve 15 or rotating the second connecting rod 17, the second connecting rod 17 moves up and down or rotates with the mounting portion 18 and the crushing teeth 19 in the blocking cover 16, breaks the impurities in the blocking cover 16, so that the impurities can pass through the filter screen 11, and the step is repeated several times to treat the impurities in the pretreatment mechanism 2. Of course, the impurities in the pretreatment mechanism 2 can also be treated by disassembly, but the cleaning mechanism 14 is used to clean the impurities, without disassembling the valve, and the operation is more convenient and fast.

[0041] It is obvious to those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0042] In addition, it should be understood that although the present application is described in the form of embodiments, each embodiment does not contain only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be properly combined to form other embodiments that those skilled in the art can understand.

Claims

1. A valve seat, characterized in that: include: Valve seat body, A pre-treatment mechanism, comprising a connecting cylinder, the connecting cylinder being detachably mounted on one end of the valve seat body, the connecting cylinder being fixedly connected to a mounting shell, the mounting shell being provided with a filter mechanism, the filter mechanism being capable of filtering the fluid before it enters the valve seat body; The filtering mechanism includes a first connecting rod, the first connecting rod passes through one end of the mounting shell, a mounting plate is installed in the mounting shell, the mounting plate has two mounting holes matching the connecting cylinder, and a filter screen matching the mounting holes is installed on the mounting plate; The mounting shell has two replacement bins matching the mounting holes, and the two replacement bins are symmetrically arranged at both ends of the connecting cylinder.

2. A valve seat according to claim 1, characterized in that: A connecting ear is fixedly connected to the outer wall of the filter screen, and the connecting ear is inserted into the mounting plate. A second bolt is threadedly connected to the mounting plate, and one end of the second bolt passes through the connecting ear.

3. A valve seat according to claim 2, characterized in that: The connecting cylinder is fixedly connected to a plurality of first sealing rings that match the mounting plate.

4. The valve seat according to claim 1, characterized in that: An observation window is provided on the installation shell, and a protective door matching the observation window is rotatably connected to the installation shell.

5. The valve seat according to claim 1, characterized in that: A first connection disk is mounted on one end of the valve seat body, a second connection disk is mounted on the end of the valve seat body away from the first connection disk, a fifth connection disk matching the second connection disk is fixedly connected to the connection tube, and a fourth connection disk is fixedly connected to the end of the connection tube away from the fifth connection disk; The fifth connecting plate is threadedly connected with a first bolt, and the first bolt passes through the second connecting plate and is threadedly connected with a nut.

6. The valve seat according to claim 1, characterized in that: The pre-treatment mechanism includes a cleaning mechanism, which is used to clean impurities on the filtering mechanism.

7. The valve seat according to claim 6, characterized in that: The cleaning mechanism includes a sleeve, one end of which passes through the mounting shell and the connecting tube, a blocking cover is installed in the connecting tube, a plurality of cleaning brushes are fixedly connected to the outer wall of the blocking cover, and the upper end of the blocking cover is fixedly connected to the lower end of the sleeve.

8. The valve seat according to claim 7, characterized in that: A second connecting rod is slidably connected in the sleeve, one end of the second connecting rod is located in the blocking cover, and one end of the second connecting rod located in the blocking cover is fixedly connected to a mounting portion, and a plurality of crushing teeth are fixedly connected to the mounting portion.

9. The valve seat according to claim 1, characterized in that: A fourth connecting disk is installed on the upper end of the valve seat body.

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