CN208950877U - Pawl pump uses muffler - Google Patents

Abstract

A kind of pawl pump muffler, including noise reduction box body and lid, feature: there is inlet chamber in sound-muffling box body, first, second, third closing chamber and exhaust cushion chamber, the bottom of inlet chamber sets air inlet, there is first passage between box body upper side wall above inlet chamber, there is second channel between inlet chamber and the first closing chamber, there is third channel below first closing chamber, third channel is extended with to the right first, second air flue, the first closing chamber opening is set on the right side of first closing chamber, there is fourth lane between third channel and the second closing chamber, second, there is Five-channel between third closing chamber, Five-channel has extended downwardly third, 4th air flue, the second closing chamber opening is set below second closing chamber, there is the 6th channel between third closing chamber and exhaust cushion chamber, third closing chamber side sets third closing chamber side opening, there is the 7th to lead between exhaust cushion chamber and inlet chamber Road, third closing chamber top set third closing chamber upper opening, and there is gas vent in the side for being vented cushion chamber.Have the function that low noise cools down.

Description

Pawl pump uses muffler

Technical field

The utility model belongs to technical field of vacuum equipment, and in particular to a kind of pawl pump uses muffler.

Background technique

Single-stage pawl pump is a kind of common oilless vacuum pump of industrial vacuum, and working cavity is using oil-free design and can produce Raw very clean vacuum environment, is mainly used for some pairs of oily pollutions than more sensitive working environment.The characteristics of pawl pumps at present is fortune Exhaust in circling is noncontinuity, and the compression in one week is imperfect, this causes the noise of exhaust very big, is easy to produce Raw very big roar, if processing appropriate is not added, this noise can cause very big influence to ambient enviroment, or even very much Occasion can not select this kind of pawl to pump.

In view of the foregoing, it is necessary to design a kind of of simple structure and low cost, can effectively contain the pawl pump of roar Use muffler.For this purpose, the applicant has made beneficial design, technical solution described below is to produce in this background Raw.

Summary of the invention

The task of the utility model is to provide for a kind of pawl pump muffler, be conducive to pawl pump discharge air pulse into Row processing and so that air-flow generates and is vortexed and upsets airflow direction to reduce noise and temperature transition, and structure it is simple, It is easy to produce, help to save noise reduction cost.

What the task of the utility model was performed by, a kind of pawl pump muffler, the noise reduction including a upper opening Box body and one lid be located at opening on lid, it is characterised in that: include in the sound-muffling box body one be formed in it is upper left Inlet chamber, one be formed in right side top the first closing chamber, one be formed in the second closing chamber of lower right-hand side, one be formed in middle part The third closing chamber of lower section and one be formed in left side lower section exhaust cushion chamber, the bottom of the inlet chamber offers an air inlet Hole is formed with a first passage, offers one above the inlet chamber between inlet chamber top and the upper side wall of noise reduction box body The inlet chamber opening being connected to first passage, is formed with one between the inlet chamber and the first closing chamber and is connected with first passage Logical second channel, the first closing chamber lower section are formed with a third channel being connected with second channel, and the third is logical Road extends to the right and is formed in the side-walls of noise reduction box body the first air flue and the second air flue that shunt up and down, first closing The right side opening of chamber is equipped with first closing chamber that is connected with the first air flue and is open, the third channel and the second closing chamber it Between be formed with a fourth lane being connected with the second air flue, be formed with one between second closing chamber and third closing chamber The Five-channel being connected with fourth lane, the Five-channel extend downwardly and form left and right in the side-walls of noise reduction box body The third air flue and the 4th air flue of shunting, the second closing chamber lower section offer second closing being connected to the 4th air flue Chamber opening, the third air flue extend to the left and are located at the lower section of third closing chamber, the third closing chamber and exhaust The 6th channel being connected to third air flue is formed between cushion chamber, the third closing chamber side offers one and the 6th The third closing chamber side opening of channel connection, is formed with one the 7th channel between the exhaust cushion chamber and inlet chamber, described Third closing chamber above offer a third closing chamber upper opening being connected with the 7th channel, on the exhaust cushion chamber Side offers an exhaust cushion chamber opening being connected with the 7th channel, and the noise reduction box body is in place in the one of exhaust cushion chamber A gas vent is offered on side wall.

In another specific embodiment of the utility model, first air flue and the second air flue are direction phase Instead, identical air flue is flowed to.

In another specific embodiment of the utility model, the third air flue and the 4th air flue are direction phase Instead, identical air flue is flowed to.

The utility model after adopting the above structure, has the advantages that firstly, since using multiple chambers to air-flow It buffered, flow-disturbing and liquidated, and mutually make up the structure of vibration phase between chamber, shrinkage expansion gas is used for, thus handle Pressure and flow and temperature transition finally have the function that low noise cools down in the gas discharged；Secondly as using Simple box body cooperation opens up the structure of chamber, thus structure is simple, is readily produced, and significantly reduces noise reduction cost.

Detailed description of the invention

Fig. 1 is the schematic perspective view of an embodiment of the present invention.

In figure: 1. noise reduction box bodys, 11. inlet chambers, 111. air inlets, 112. inlet chambers opening, 113. first passages, 114. Second channel, 12. first closing chambers, 121. first closing chambers opening, 122. third channels, 1221. first air flues, 1222. Two air flues, 13. second closing chambers, 131. fourth lanes, 132. Five-channels, 1321. third air flues, 1322. the 4th air flues, 133. the second closing chamber opening, 14. third closing chambers, 141. the 6th channels, 142. third closing chamber side openings, 143. thirds envelope Closed chamber upper opening, 15. exhaust cushion chambers, 151. the 7th channels, 152. exhaust cushion chamber openings, 153. gas vents.

Specific embodiment

It elaborates by way of examples below, but is not to the utility model to the description of embodiment Limitation, it is any according to the utility model design it is made be only that formal but not substantive equivalent transformation should all regard For category of the technical solutions of the present invention.

The concept of all directionality for being related to upper, lower, left, right, front and rear or directionality is all in the following description For the location of current Fig. 1 state, thus it cannot be understood as to technical solution provided by the utility model Be particularly limited to.

Referring to Fig. 1, the utility model relates to a kind of pawl pump muffler, 1 He of noise reduction box body including a upper opening One lid is located at the lid 2 in opening, includes one to be formed in upper left inlet chamber 11, one and constitute in the noise reduction box body 1 The second closing chamber 13, one that the first closing chamber 12, one above right side is formed in lower right-hand side is formed in the below middle part Three closing chambers 14 and one be formed in left side lower section exhaust cushion chamber 15, the bottom of the inlet chamber 11 offers an air inlet 111, a first passage 113,11 top of inlet chamber are formed between 11 top of inlet chamber and the upper side wall of noise reduction box body 1 An inlet chamber opening 112 being connected to first passage 113 is offered, is formed between the inlet chamber 11 and the first closing chamber 12 There is a second channel 114 being connected with first passage 113, is formed with one and second channel below first closing chamber 12 114 third channels 122 being connected, the third channel 122 extend to the right and form shunting up and down in the side-walls of noise reduction box body 1 The first air flue 1221 and the second air flue 1222, the right side opening of first closing chamber 12 is equipped with one and 1221 phase of the first air flue The first closing chamber opening 121 of connection, is formed with one and second air flue between the third channel 122 and the second closing chamber 13 1222 fourth lanes 131 being connected, are formed with one and four-way between second closing chamber 13 and third closing chamber 14 The Five-channel 132 that road 131 is connected, the Five-channel 132 extend downwardly and form a left side in the side-walls of noise reduction box body 1 The third air flue 1321 and the 4th air flue 1322 of right shunting offer the one and the 4th air flue below second closing chamber 13 The second closing chamber opening 133 of 1322 connections, the third air flue 1321 extend to the left and are located at third closing chamber 14 Lower section is formed with the 6th channel being connected to third air flue 1321 between the third closing chamber 14 and exhaust cushion chamber 15 141,14 side of third closing chamber offers a third closing chamber side opening 142 being connected to the 6th channel 141, described Exhaust cushion chamber 15 and inlet chamber 11 between be formed with one the 7th channel 151, offered above the third closing chamber 14 The one third closing chamber upper opening 143 being connected with the 7th channel 151 offers one and above the exhaust cushion chamber 15 The exhaust cushion chamber opening 152 that seven channels 151 are connected, the noise reduction box body 1 is in the one side wall for being located at exhaust cushion chamber 15 On offer a gas vent 153.

Further, first air flue 1221 and the second air flue 1222 be it is contrary, flow to identical air flue.Institute The third air flue 1321 and the 4th air flue 1322 stated be it is contrary, flow to identical air flue.

Referring to Fig. 1, air-flow is first in institute when the air pulse of pawl pump is entered in noise reduction box body 1 by air inlet 111 11 inner volume of inlet chamber stated expands row buffering of going forward side by side, and the pressure chamber of air-flow and temperature can all reduce at this time, and then air-flow successively leads to Cross inlet chamber opening 112, first passage 113, first passage 114 and third channel 122, the end of the air-flow in third channel 122 Equivalent is carried out and contrary shunting by the first air flue 1221 and the second air flue 1222, and a part of air-flow passes through the first gas Road 1221 enters the first closing chamber 12 and in wherein buffering, flow-disturbing and to the vibration frequency and amplitude for bringing upset air-flow, another Fraction passes sequentially through the second air flue 1222, fourth lane 131 and Five-channel 132, the end of the air-flow in Five-channel 132 Equivalent is carried out again and contrary shunting by third air flue 1321 and the 4th air flue 1322, and a part of air-flow passes through the 4th Air flue 1322 enters the second closing chamber 13, and another part air-flow enters third by third air flue 1321 and the 6th channel 141 and seals Closed chamber 14, the air-flow in second closing chamber 13 and third closing chamber 14 buffered respectively, flow-disturbing and is upset to bringing The vibration frequency and amplitude of air-flow and shaking back and forth mutually makes up the vibration phase of respective intracavitary air-flow, in addition, described the Air-flow in one closing chamber 12 shakes the vibration phase made up into gas in the second closing chamber 13 and third closing chamber 14 back and forth, Last air-flow passes through the 7th channel 151 to be completed to be discharged after buffering by gas vent 153 into exhaust cushion chamber 15 is interior.

Claims (3)

1. a kind of pawl pump muffler, noise reduction box body (1) He Yigai including a upper opening are located at the lid (2) in opening, It is characterized by: including one to be formed in upper left inlet chamber (11), one be formed on right side in the noise reduction box body (1) Side the first closing chamber (12), one be formed in the second closing chamber (13) of lower right-hand side, one be formed in middle part lower section third envelope Closed chamber (14) and one be formed in left side lower section exhaust cushion chamber (15), the bottom of the inlet chamber (11) offers an air inlet Hole (111) is formed with a first passage (113) above the inlet chamber (11) between the upper side wall of noise reduction box body (1), it is described into It offers the inlet chamber that one be connected to first passage (113) above air cavity (11) to be open (112), the inlet chamber (11) and the A second channel (114) being connected with first passage (113), first closing chamber are formed between one closing chamber (12) (12) lower section is formed with a third channel (122) being connected with second channel (114), which extends to the right And the first air flue (1221) and the second air flue (1222) shunted up and down is formed in the side-walls of noise reduction box body (1), described The right side opening of one closing chamber (12) is equipped with a first closing chamber opening (121) being connected with the first air flue (1221), described A fourth lane being connected with the second air flue (1222) is formed between third channel (122) and the second closing chamber (13) (131), one is formed between second closing chamber (13) and third closing chamber (14) to be connected with fourth lane (131) Five-channel (132), the Five-channel (132) extend downwardly and form left and right in the side-walls of noise reduction box body (1) and shunt Third air flue (1321) and the 4th air flue (1322), offer the one and the 4th air flue below second closing chamber (13) (1322) the second closing chamber being connected to is open (133), and the third air flue (1321), which extends to the left and is located at third, to be closed The lower section of chamber (14) is formed with one and third air flue (1321) between the third closing chamber (14) and exhaust cushion chamber (15) 6th channel (141) of connection, described third closing chamber (14) side offers a third being connected to the 6th channel (141) Closing chamber side opening (142) is formed with one the 7th channel (151) between the exhaust cushion chamber (15) and inlet chamber (11), A third closing chamber upper opening (143) being connected with the 7th channel (151) is offered above the third closing chamber (14), An exhaust cushion chamber opening (152) being connected with the 7th channel (151), institute are offered above the exhaust cushion chamber (15) The noise reduction box body (1) stated offers a gas vent (153) in the one side wall for being located at exhaust cushion chamber (15).

2. a kind of pawl pump muffler according to claim 1, it is characterised in that first air flue (1221) and the Two air flues (1222) be it is contrary, flow to identical air flue.

3. a kind of pawl pump muffler according to claim 1, it is characterised in that the third air flue (1321) and the Four air flues (1322) be it is contrary, flow to identical air flue.