CN211039044U - Silencer for screw vacuum pump - Google Patents
Silencer for screw vacuum pump Download PDFInfo
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- CN211039044U CN211039044U CN201922135510.0U CN201922135510U CN211039044U CN 211039044 U CN211039044 U CN 211039044U CN 201922135510 U CN201922135510 U CN 201922135510U CN 211039044 U CN211039044 U CN 211039044U
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- vacuum pump
- shell
- filter screen
- filter
- screw vacuum
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Abstract
The utility model provides a silencer for screw vacuum pump belongs to vacuum pump technical field, and it has solved the inside easy jam of current silencer for screw vacuum pump, needs frequent change muffler to lead to the higher problem of use cost. This a silencer for screw vacuum pump, including the shell body and fix the filtration shell in the bottom of shell body, two the inboard crisscross variable cross-section pipeline that runs through that is provided with of closing plate, the mid-mounting of the inboard of filtering the shell has the filter screen, the bottom of filtering the shell is through bolt fixedly connected with closure plate. The utility model discloses a gas that contains impurity, dust and corrosive medium that the air inlet got into can be held back effectively to the filter screen for clean gas gets into the inboard of cooling water spacer, has avoided the phenomenon that the inside emergence of muffler blockked up, and the filter screen is convenient for wash and change, thereby has reduced use cost.
Description
Technical Field
The utility model relates to a vacuum pump technical field relates to a silencer, specifically is a silencer for screw vacuum pump.
Background
The screw vacuum pump has the advantages of compact structure, high pumping speed, high vacuum degree, high direct exhaust, long service life, no oil and water in a pump cavity and the like, and is widely applied to the related fields of pharmaceutical technology, chemical technology, solvent recovery, special gas recovery, oil gas recovery, film preparation, biochemical detection and analysis, semiconductors, microelectronics, solar energy, material treatment and the like.
Chinese patent discloses a non-return silencer (No. CN206206183U) of screw pump, which can reduce the noise of screw pump in use, but the inside of the screw pump is easy to be blocked, and the silencer needs to be replaced frequently, thus resulting in higher use cost. Accordingly, those skilled in the art have provided a muffler for a screw vacuum pump to solve the problems set forth in the background art described above.
Disclosure of Invention
An object of the utility model is to provide a silencer for screw vacuum pump to solve the easy jam in its inside that provides in the above-mentioned background art, need frequent change muffler, thereby lead to the higher problem of use cost.
The purpose of the utility model can be realized by the following technical proposal: the utility model provides a silencer for screw vacuum pump, has the shell body of gas outlet including one end, the shell body is kept away from the one end of air inlet and has been set firmly the filter shell, the inboard of shell body is provided with the sealed cooling water spacer of annular, two closing plates of the inboard fixedly connected with of cooling water spacer, two the crisscross variable cross section pipeline that runs through that is provided with in inboard of closing plate, the outside fixedly connected with air inlet and the drain of filter shell, bolt fixedly connected with closure plate is passed through to the bottom of filter shell, the filter opening has been seted up with the junction of filtering the shell to the shell body, the mid-mounting of the inboard of filtering the shell has the ring to walk around the filter screen that the filter opening set.
This muffler is used for installing the gas vent at screw vacuum pump, filters the gas that contains impurity, dust and corrosive medium that gets into from the air inlet through the filter screen for clean gas gets into the inboard of cooling water spacer, changes the direction and the flow velocity that gas flows through the variable cross section pipeline of crisscross setting, and then reduces the noise that the in-process that screw vacuum pump bled produced, and last gas loops through gas outlet and vertical floater check valve and discharges.
In the above-described muffler for a screw vacuum pump: the upper portion fixedly connected with of shell body outside one end and the delivery port of cooling water spacer intercommunication, and the lower part fixedly connected with of the outside other end of shell body and the water inlet of cooling water spacer intercommunication, water inlet and delivery port are used for respectively with outside circulating pump and cooling water tank fixed connection. Through connecting water inlet, cooling water spacer, delivery port, circulating pump and coolant tank into a endless return circuit, and then can make the coolant liquid circulation in the coolant tank enter into the inside of cooling water spacer, take away the heat in the gas, and then improved the life of silencer.
In the above-described muffler for a screw vacuum pump: the filter opening is located the top of filter screen, the closure plate is located the bottom of filter screen, the filter screen passes through the closure plate and fixes the inboard at the filter shell with the shell body, after opening the closure plate, can pull down the filter screen, after the long-time work of filter screen, conveniently washs and changes the filter screen.
In the above-described muffler for a screw vacuum pump: the top of gas outlet is through screw fixedly connected with vertical floater check valve to can avoid appearing the backward flow phenomenon from the gas of gas outlet, and then improve the security that the silencer used.
In the above-described muffler for a screw vacuum pump: the drain has the end cap through screw thread fixed mounting, and when the filter screen held back impurity, dust and the corrosive medium in the gas in crossing the shell, opened the end cap of drain, can discharge some impurity.
In the above-described muffler for a screw vacuum pump: the filter screen is a component with a cylindrical hollow structure, and the outer diameter of the filter screen is larger than the inner diameter of the filter opening, so that gas can be effectively ensured to enter the filter opening from the inside of the filter screen and then enter the inside of the cooling water spacer sleeve after being filtered.
Compared with the prior art, the beneficial effects of the utility model are that:
can hold back the gas that contains impurity, dust and corrosive medium that gets into from the air inlet effectively through the filter screen for clean gas gets into the inboard of cooling water spacer, changes the direction and the flow velocity that gas flows through the variable cross-section pipeline that sets up crisscross, thereby reduces the noise that the in-process that the screw vacuum pump bleeds produced, has avoided the inside phenomenon of taking place to block up of muffler, and the filter screen is convenient for wash and change, thereby has reduced use cost.
Drawings
FIG. 1 is a schematic view of a muffler for a screw vacuum pump;
fig. 2 is a schematic view of the installation of a muffler for a screw vacuum pump.
In the figure: 1. an outer housing; 2. a cooling water spacer sleeve; 3. a water inlet; 4. a filter screen; 5. a filter shell; 6. a sewage draining outlet; 7. a blocking plate; 8. an air inlet; 9. a filter port; 10. a variable cross-section pipeline; 11. a water outlet; 12. an air outlet; 13. a vertical floating ball check valve; 14. and (7) sealing the plate.
Detailed Description
Detailed description of the inventionwhile the embodiments of the present invention will be described in detail and fully with reference to the accompanying drawings, it is to be understood that the embodiments are merely illustrative of some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in attached drawings 1 and 2, a silencer for a screw vacuum pump, including shell body 1 and fix the filtration shell 5 in the bottom of shell body 1, the inboard of shell body 1 is provided with annular sealed cooling water spacer 2, the top fixedly connected with gas outlet 12 of shell body 1, two closing plates 14 of inboard fixedly connected with of cooling water spacer 2, the crisscross variable cross section pipeline 10 that runs through that is provided with in the inboard of two closing plates 14, the middle part fixedly connected with air inlet 8 of the outside one end of filtration shell 5, the lower part fixedly connected with drain 6 of the outside other end of filtration shell 5, the mid-mounting of the inboard of filtration shell 5 has filter screen 4, the bottom of filtration shell 5 is through bolt fixedly connected with closure plate 7, the junction of shell body 1 and filtration shell 5 has seted up filtration mouth 9.
The implementation mode is specifically as follows: this muffler is used for installing the gas vent at screw vacuum pump, filters the gas that contains impurity, dust and corrosive medium that gets into from air inlet 8 through filter screen 4 for clean gas gets into the inboard of cooling water spacer 2, changes the direction and the flow velocity that gas flows through the variable cross section pipeline 10 that sets up crisscross, and then reduces the noise that the in-process that screw vacuum pump bled, and gas loops through gas outlet 12 and vertical floater check valve 13 at last and discharges.
The silencer for the screw vacuum pump is shown in the attached drawings 1 and 2, the fixedly connected with water outlet 11 on the upper portion of one end of the outer side of the outer shell 1 is provided with a water inlet 3 fixedly connected with the lower portion of the other end of the outer side of the outer shell 1, the water inlet 3 and the water outlet 11 are fixedly connected with an external circulating pump and a cooling water tank through a water pipe, the water inlet 3 is connected with the cooling water spacer 2 through the water inlet, the water outlet 11 is connected with the cooling water tank into a circulating loop, cooling liquid in the cooling water tank can enter the inside of the cooling water spacer 2 in a circulating mode, heat in gas is taken away, and the service life of the silencer is prolonged.
The filter mouth 9 is located the top of filter screen 4, and closure plate 7 is located the bottom of filter screen 4, and filter screen 4 passes through closure plate 7 to be fixed in the inboard of filtering shell 5 with shell body 1, after opening closure plate 7, can pull down filter screen 4, after the long-time work of filter screen, conveniently washs and changes filter screen 4.
The top end of the air outlet 12 is fixedly connected with a vertical floating ball check valve 13 through a screw, so that the backflow phenomenon of the air discharged from the air outlet 12 can be avoided, and the use safety of the silencer is improved.
The air inlet 8 is fixedly connected with an exhaust port of the external screw pump, the drain outlet 6 is fixedly provided with a plug through threads, and when the filter screen 4 intercepts impurities, dust and corrosive media in the gas in the filter shell 5, the plug of the drain outlet 6 is opened, and partial impurities can be discharged.
The filter screen 4 is a component with a cylindrical hollow structure, and the outer diameter of the filter screen 4 is larger than the inner diameter of the filter opening 9, so that the gas can be effectively ensured to enter the filter opening 9 from the inside of the filter screen 4 and then enter the inside of the cooling water spacer 2 after being filtered.
The utility model discloses a theory of operation is: firstly, one end of an air inlet is arranged on an exhaust port of a screw vacuum pump, then a water inlet 3, a cooling water spacer bush 2 and a water outlet 11 are connected with an external circulating pump and a cooling water tank to form a circulating loop, further, the cooling liquid in the cooling water tank can circularly enter the inside of the cooling water spacer 2, the gas which enters from the air inlet 8 and contains impurities, dust and corrosive media firstly enters the inside of the filter shell 5 and then is filtered by the filter screen 4, the impurities are intercepted outside the filter screen 4, the clean gas enters the filter opening 9 from the inside of the filter screen 4 and then enters the inside of the cooling water spacer 2, the direction and flow rate of the gas flow is then changed by the staggered arrangement of the variable cross-section pipes 10, and then the noise that produces in the process of screw vacuum pump evacuation is reduced, and gas loops through gas outlet 12 and vertical floater check valve 13 and discharges in proper order at last.
The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;
secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are referred to, and other structures can refer to the common design, and under the condition of no conflict, the same embodiment and different embodiments of the present invention can be combined with each other;
and finally: the above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A silencer for a screw vacuum pump comprises an outer shell (1) with an air outlet (12) at one end, it is characterized in that one end of the outer shell (1) far away from the air inlet is fixedly provided with a filter shell (5), the inner side of the outer shell (1) is provided with an annular sealed cooling water spacer bush (2), the inner side of the cooling water spacer bush (2) is fixedly connected with two sealing plates (14), the inner sides of the two sealing plates (14) are provided with penetrating variable-section pipelines (10) in a staggered manner, the outer side of the filter shell (5) is fixedly connected with an air inlet (8) and a sewage draining outlet (6), the bottom end of the filter shell (5) is fixedly connected with a blocking plate (7) through a bolt, a filtering port (9) is arranged at the joint of the outer shell (1) and the filtering shell (5), the middle part of the inner side of the filter shell (5) is provided with a filter screen (4) which is arranged around the filter port (9).
2. The muffler for the screw vacuum pump according to claim 1, wherein the upper part of one end of the outer side of the outer shell (1) is fixedly connected with a water outlet (11) communicated with the cooling water spacer (2), and the lower part of the other end of the outer side of the outer shell (1) is fixedly connected with a water inlet (3) communicated with the cooling water spacer (2), wherein the water inlet (3) and the water outlet (11) are respectively used for being fixedly connected with an external circulating pump and a cooling water tank.
3. A muffler for a screw vacuum pump according to claim 1, characterized in that the filter opening (9) is located at the top end of the filter screen (4), the closure plate (7) is located at the bottom end of the filter screen (4), and the filter screen (4) is fixed to the inside of the filter housing (5) through the closure plate (7) and the outer housing (1).
4. A muffler for a screw vacuum pump according to claim 1, wherein a vertical floating ball check valve (13) is fixedly connected to the top end of the outlet port (12) by means of a screw.
5. A silencer for a screw vacuum pump according to claim 1, characterised in that the discharge opening (6) is fixedly provided with a plug by means of a thread.
6. A muffler for a screw vacuum pump according to claim 1, wherein the filter screen (4) is a member of a cylindrical hollow structure, and the outer diameter of the filter screen (4) is larger than the inner diameter of the filter port (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922135510.0U CN211039044U (en) | 2019-12-03 | 2019-12-03 | Silencer for screw vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922135510.0U CN211039044U (en) | 2019-12-03 | 2019-12-03 | Silencer for screw vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211039044U true CN211039044U (en) | 2020-07-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922135510.0U Active CN211039044U (en) | 2019-12-03 | 2019-12-03 | Silencer for screw vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211039044U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114934892A (en) * | 2022-06-10 | 2022-08-23 | 合肥美的电冰箱有限公司 | Silencer, compressor and household appliance |
| CN118327935A (en) * | 2024-06-11 | 2024-07-12 | 浙江麦迪制冷科技股份有限公司 | Silencing device of refrigeration compressor |
-
2019
- 2019-12-03 CN CN201922135510.0U patent/CN211039044U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114934892A (en) * | 2022-06-10 | 2022-08-23 | 合肥美的电冰箱有限公司 | Silencer, compressor and household appliance |
| CN118327935A (en) * | 2024-06-11 | 2024-07-12 | 浙江麦迪制冷科技股份有限公司 | Silencing device of refrigeration compressor |
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