CN2561965Y - Casing and basement structure of multi-stage compressor or vacuum pump - Google Patents

Abstract

A shell seat structure of a roots multistage compressor or a vacuum pump is provided, the utility model relates to a shell module structure of the roots compressor (or vacuum pump) with a multistage connection shaft rotor. The structure is provided with a modular cylinder body, a single cavity butt cylinder body, a complex cavity butt cylinder body, a butt separating plate, a connection shaft rotor that can accord to the specifications with different stages (or levels), a combined mode for the machine shell module selection, as well as machine shell body assembled and constitute to be suitable for the roots multistage compressor (or vacuum pump) with two-stage type, three-stage type, four-stage type, or more than four-stage type etc. The utility model can exactly realize the purpose of the combined elements on mutual communication and share, and can simply the combined procedure, so as to make the combined and composed roots multistage compressor (or vacuum pump) use the multistage connection shaft rotor with better precision and performance, meanwhile, because the decreased combined surfaces of the combined elements, the air leakage phenomenon can be greatly improved, thereby improving the quality and performance of the roots multistage compressor (or vacuum pump) .

Description

The chassis block body structure of multistage type roots compressor or vacuum pump

Technical field

The utility model relates to the chassis block body structure of multistage type roots compressor (or vacuum pump), and finger is applicable to the chassis block body structure of the roots compressor (or vacuum pump) of multistage type connecting shaft rotor (that is, rotor and rotating shaft are formed in one) especially.

Background technique

As everyone knows, constitute the casing pedestal of commonly using multistage type roots compressor (Roots Compressor) or vacuum pump (Vacuum Pump), be divided into two kinds of patterns substantially.One for adopting the pattern that the single-piece frame pedestal is separated up and down and makes up, and is made of a upper casing pedestal and another part lower housing pedestal.Also adorn about another pattern then adopts the casing pedestal by the modular member and constitute.

Reach for convenience of description and stress the succinct purpose of article, hereinafter all show " roots compressor (or vacuum pump) " with " roots compressor " vocabulary.

The casing pedestal of the multistage type of commonly using roots compressor as shown in Figure 2 is to constitute also to adorn about modular cylinder block (1) shown in Figure 3 and dividing plate (5) member.For example, form the middle dividing plate (5) that is provided with of cylinder block (1) of approximate 8 fonts that crouch two inner hollow, the cylinder block (1) that difference can be compressed (or bleeding) level (or section) number seals with another cylinder block (1) and reaches airtightly, and constitutes the casing pedestal of two segment type roots compressors with two sections compressions (or bleeding) effect.Analogize according to this integrated mode, utilize three, or four, or five cylinder blocks (1), and each is provided with dividing plate (5) again in the middle of each cylinder block (1), each cylinder block (1) that difference can be compressed (or bleeding) level (or section) number seals and reaches airtight and constitute the casing pedestal that is used for three-segment type or four segment type roots compressors rapidly, or the casing pedestal of five segment type roots compressors shown in Figure 2.

Yet, modular cylinder block of this kind (1) and dividing plate (5) member, shortcoming is structurally arranged, promptly only be applicable to rotor set (3) and rotating shaft (13), (14) adopt separate design pattern (as shown in Figure 3), and the multistage connecting shaft rotor (as shown in Figure 4) that inapplicable rotor and rotating shaft are formed in one, cause the reason of this phenomenon, for dividing plate (5) is all-in-one-piece structural design, centre offers two axis holes, two parallel rotating shafts (13) must be provided, (14) place respectively, but be arranged on rotating shaft (13), (14) rotor set on the axle (3) then cannot place by the event of dividing plate (5).

In addition, this kind modular cylinder block (1) and dividing plate (5), the rotor set (3) that constitute when commonly using multistage type roots compressor, must follow the prescribed order and one by one the different compressions of each section (or bleeding) level (or section) be counted with rotor set (3) and rotating shaft (13), be placed in each section cylinder block (1) inside one by one and be locked together on rotating shaft (13), (14) axle one by one, and fixing with the cylinder block (1) and the dress of different with each section one by one compressions of dividing plate (5) (or bleeding) progression, could assemble to constitute and commonly use multistage type roots compressor.And, the left and right sides two side faces of each dividing plate (5) must make up with each cylinder block (1) of different compressions (or bleeding) progression, cause the too much and loaded down with trivial details shortcoming of combinator of junction plane, and be easy to generate problems such as fitted position sum of errors precision is not good, level (or section) number that causes commonly using multistage type roots compressor (or vacuum pump) is higher, the air leakage phenomenon takes place more easily, and quality and performance are bad further.

See also Fig. 1, and adopt by the casing pedestal of upper casing pedestal (50) with another part lower housing pedestal (60) assembling formation multistage type roots compressor, the necessary difference of its upper casing pedestal (50) and lower housing pedestal (60) is casting separately, and the internal placement of upper casing pedestal (50) and lower housing pedestal (60), basically be symmetrical structure, the integrally casting moulding has several pieces half of dividing plates, separates the compression steam chest that the inner space forms array one side of something.Behind the relative also dress of upper casing pedestal (50) the composition single-piece frame pedestal with lower housing pedestal (60), relative half of dividing plate is corresponding one by one mutually and group is found into several pieces complete dividing plates in inside, so the inner space of single-piece frame pedestal also just separates into array air compression steam chest, can be applicable to the multistage connecting shaft rotor (as shown in Figure 4) that rotor and rotating shaft are formed in one.Therefore, in assembling, convenient advantage is arranged.

But upper casing pedestal (50) does not design through modular with lower housing pedestal (60), and maximum shortcoming lacks common or sharing characteristic exactly.Cause and must design upper casing pedestal (50) and lower housing pedestal (60) that two segment types, three-segment type or four segment type roots compressors use respectively according to the roots compressor specification of different sections (level) number, and the difference casting.So the upper casing pedestal (50) of two segment types and lower housing pedestal (60) can only be used in the casing pedestal of two segment types, can not be used in the casing pedestal of three-segment type or four segment types.In like manner analogize, the upper casing pedestal (50) of three-segment type and lower housing pedestal (60) can only be used in the casing pedestal of three-segment type, and the upper casing pedestal (50) of four segment types and lower housing pedestal (60) can only be used in the casing pedestal of four segment types.

The model utility content

The utility model designer is because the chassis block body structure of the multistage type roots compressor of commonly using, there are above-mentioned many shortcomings to wait to improve, especially be suitable for aspect the multistage connecting shaft rotor that rotor and rotating shaft be formed in one, assembly still just lacks common or sharing characteristic, satisfies research and development improvement successively and finishes the utility model.

Main purpose of the present utility model is to innovate the chassis block body structure of multistage type roots compressor, with modular structural design, can be applicable to the multistage connecting shaft rotor that rotor and rotating shaft are formed in one, really reach the common or shared purpose of compostle member, to simplify combinator and to reduce the air leakage phenomenon, make multistage type roots compressor have preferable precision and performance.

Secondary objective of the present utility model is to disclose a kind of chassis block body structure of multistage type roots compressor, have modular cylinder block, single chamber butt joint cylinder body, multiple chamber butt joint cylinder body and butt joint partition component, can be according to the connecting shaft rotor of different hop counts (or progression) specification, select different integrated modes, with the combination aspect that changes the casing pedestal, and assembling constitutes the casing pedestal that is applicable to multistage type roots compressors (or vacuum pump) such as two segment types, three-segment type or four segment types.

Description of drawings

Fig. 1 is a casing pedestal of commonly using multistage type roots compressor or vacuum pump, and employing separates up and down and constitutes;

Fig. 2 is a casing pedestal of commonly using multistage type roots compressor or vacuum pump, adopt the modular member and also with about and dress constitute;

Fig. 3 forms the exploded view of member for the modular of commonly using multistage type roots compressor or vacuum pump of Fig. 2;

Fig. 4 is applicable to the integrated multipiece rotor of rotor and active rotating shaft or driven spindle for the utility model modular member, can constitute the decomposing schematic representation of four segment type roots compressors or vacuum pump casing pedestal;

Fig. 5 is that the utility model is used for the roots compressor of connecting shaft rotor or the modular member schematic representation of vacuum pump casing, includes single chamber butt joint cylinder body, multiple chamber butt joint cylinder body, butt joint dividing plate and cylinder block;

Fig. 6 is four kinds of not isostructure part section stereograms of the utility model modular butt joint partition component;

Fig. 7 is that the circulating path that is compressed air carries out in the inside of casing by the utility model modular list chamber butt joint cylinder body, multiple chamber butt joint cylinder body, butt joint four segment type roots compressors or vacuum pump schematic representation that dividing plate and cylinder block constituted;

Fig. 8 is the compostle member exploded view of Fig. 7;

Fig. 9 is the sectional drawing of Fig. 7, by members such as the utility model modular list chamber butt joint cylinder body, multiple chamber butt joint cylinder body, butt joint dividing plate and cylinder blocks, cooperate and integrated active rotating shaft of rotor and driven spindle, constitute the schematic representation of four segment type roots compressors or vacuum pump;

Figure 10 is that the circulating path that is compressed air carries out in the outside of casing by the utility model modular list chamber butt joint cylinder body, multiple chamber butt joint cylinder body, butt joint four segment type roots compressors or vacuum pump schematic representation that dividing plate and cylinder block constituted;

Figure 11 is the compostle member exploded view of Figure 10;

Figure 12 is the sectional drawing of Figure 10, by members such as the utility model modular list chamber butt joint cylinder body, multiple chamber butt joint cylinder body, butt joint dividing plate and cylinder blocks, cooperate and integrated active rotating shaft of rotor and driven spindle, constitute the schematic representation of four segment type roots compressors or vacuum pump;

Figure 13 is for docking four segment type roots compressors or the vacuum pump casing pedestal schematic representation that cylinder body constitutes by the utility model modular list chamber butt joint cylinder body with multiple chamber;

Four segment type roots compressors or the vacuum pump casing pedestal schematic representation of Figure 14 for being constituted by the utility model modular list chamber butt joint cylinder body and cylinder block machine;

Four segment type roots compressors or the vacuum pump casing pedestal schematic representation of Figure 15 for being constituted by the utility model modular list chamber butt joint cylinder body, butt joint dividing plate and cylinder block machine;

Figure 16 is for by the utility model modular list chamber butt joint cylinder body, butt joint dividing plate four segment type roots compressors or the vacuum pump casing pedestal schematic representation with cylinder block different kenels that machine constitutes;

Figure 17 is by four segment type roots compressors or the vacuum pump engine housing schematic representation of butt joint cylinder body in the utility model modular list chamber with cylinder block different kenels that machine constitutes;

Figure 18 is for being docked cylinder body, cylinder block and docked four segment type roots compressors or the vacuum pump casing pedestal schematic representation that dividing plate constitutes by the utility model modular list chamber;

Figure 19 is that the circulating path that is compressed air carries out in the inside of casing by the butt joint of the utility model modular four segment type roots compressors or vacuum pump schematic representation that dividing plate and cylinder block constituted;

Figure 20 is for docking four segment type roots compressors or the vacuum pump casing pedestal schematic representation that dividing plate and cylinder block constituted by the utility model modular.

Embodiment

See also Fig. 4, the utility model is applicable to rotor (33) and active rotating shaft (30), or the multistage connecting shaft rotor that is formed in one of rotor (43) and driven spindle (40), connecting shaft rotor according to different progression (or hop count), must select integrated mode inequality, be applicable to the casing pedestal of multistage type roots compressors such as comprising two segment types, three-segment type, four segment types or five segment types with formation.

For helping to understand concrete characteristics of the present utility model or effect, conjunction with figs. detailed description specific embodiment of the utility model is as follows now:

See also Fig. 5, the roots compressor casing modular structure that is used for the connecting shaft rotor that the utility model disclosed includes modular single chamber butt joint cylinder body (6), multiple chamber butt joint cylinder body (7), butt joint dividing plate (8) and cylinder block (9).

Please consult Fig. 4 again, cylinder block of the present utility model (9) has integral design or two kinds of separate design (not painting among the figure) up and down.Monoblock cylinder (9) appearance profile slightly is ＂ O ＂ type ellipse, and inner hollow constitutes the air compression cavity of approximate 8 fonts that crouch, so the group rotor (33), (43) that are shaped on active rotating shaft (30) and the driven spindle (40) are installed in it; And form flange (18) in its both sides external appropriate position, and offer duct (19) on the flange (18), communicate with the air compression cavity of cylinder block (9), and become the air inlet or the compressed air outlet port of monoblock cylinder (9).

And the cylinder block of separate design (9) is up and down docked mutually by the half of formula cylinder block of two symmetries and to constitute.The appearance profile of each half of formula cylinder block slightly is the semiellipse type, inner hollow form can approximate 8 fonts that crouch of mutual involutory formation the air compression cavity, its appropriate position, outside forms flange (18), this flange (18) is provided with duct (19), and the air compression cavity that forms with inner hollow communicates.Therefore, cylinder block (9) structure after two half of formula cylinder block butt joints are made up, identical with monoblock cylinder (9), be the oval appearance profile of ＂ O ＂ type, the inner air compression cavity that forms approximate 8 fonts that crouch is with a ccontaining group rotor (33), (43) that are shaped on active rotating shaft (30) and the driven spindle (40).

Because with the up and down cylinder block (9) or the monoblock cylinder (9) of separate design, the casing pedestal of the multistage type roots compressor that constitutes possesses identical function.Therefore, mention about cylinder block (9) in that the utility model is hereinafter all, all refer to the applicable cylinder block (9) or the monoblock cylinder (9) of separate design up and down.

Please consult Fig. 5 again, single chamber butt joint cylinder body (6) is the semiellipse cylinder, the one end forms opening, the other end forms and to seal and constitute the half of dividing plate (62) with thickness, the inner hollow of opening end forms half of formula air compression cavity, and appropriate position, the outside forms flange, and this flange is provided with the duct, and the half of formula air compression cavity that forms with inside communicates.Because single chamber butt joint cylinder body (6) is the member of half of formula, thus a horizontal composition plane had, and on the horizontal composition plane that half of dividing plate (62) is located, be concaved with two semicircle axis holes; Therefore, two single chamber butt joint cylinder bodies (6) are mutually with after its horizontal composition plane butt joint, the whole single chamber cylinder body that can form an appearance profile and the similar ＂ of the being O of cylinder block (9) ＂ type ellipse, one end is constituted by two the half of dividing plates (62) that dock and seals, and have two circular axis holes, can settle the active rotating shaft (30) and the driven spindle (40) of multistage connecting shaft rotor as shown in Figure 4, and the other end forms the inside of opening, then form the air compression cavity of approximate 8 fonts that crouch, with a ccontaining group rotor (33) that is shaped on active rotating shaft (30) and the driven spindle (40), (43).

For being applicable to dissimilar multistage type roots compressors, single chamber butt joint cylinder body (6) that the utility model disclosed has half of dividing plate (62) to be provided with air flow channel, or half of dividing plate (62) does not have two kinds of essential structures of air flow channel fully.

For example, when being applicable to as Fig. 7, Fig. 8 and multistage type roots compressor shown in Figure 9, because the circulating path of air compression that it carries out multistage (or section), be to carry out in casing pedestal inside and finish, so must adopt two single chamber butt joint cylinder bodies (6) that are provided with air flow channel in half of dividing plate (62).And, set duct on single its flange of chamber butt joint cylinder body (6), except as the air inlet, all adopt plate washer that it locking closure is sealed, make compressed air to discharge via the air flow channel of half of dividing plate (62), and enter in the air compression cavity of next stage (or section), proceed air compression.

Moreover based on the cooling purpose, the half of dividing plate (62) of single chamber butt joint cylinder body (6) is provided with outside the air flow channel, also can connect cooling tube, to promote the performance of multistage type roots compressor.

And when being applicable to as Figure 10, Figure 11 and multistage type roots compressor shown in Figure 12, because the circulating path of air compression that it carries out multistage (or section), be to carry out, just must adopt two single chamber butt joint cylinder bodies (6) that are not provided with air flow channel in half of dividing plate (62) at chassis block external body connecting pipeline.Set duct on single its flange of chamber butt joint cylinder body (6) except as the air inlet, then is connected with exterior line, utilizes exterior line that the air that is compressed is transmitted in the air compression cavity that enters next stage (or section), proceeds air compression.

Based on the cooling purpose, the half of dividing plate (62) of single chamber butt joint cylinder body (6) is not provided with air flow channel, and the water channel in that the inside of this one side of something dividing plate (62) also must be formed for cooling off must be connected with cooling tube, to promote the performance of multistage type roots compressor.

Please consult Fig. 5 again, multiple chamber butt joint cylinder body (7) also is the semiellipse cylinder, its two end forms opening, neutral position then forms the half of dividing plate (72) with thickness, isolate the inner air compression cavity that forms two half of formulas, two sides of each half of formula air compression cavity form flange, and this flange is provided with the duct, and the half of formula air compression cavity that forms with inside communicates.Because multiple chamber butt joint cylinder body (7) is the member of half of formula, thus a horizontal composition plane had, and on the horizontal composition plane that half of dividing plate (72) is located, be concaved with two semicircle axis holes; Therefore, two multiple chamber butt joint cylinder bodies (7) are mutually with after its horizontal composition plane butt joint, can form an appearance profile and answer the chamber cylinder body to the integral body of the similar ＂ of the being O of cylinder block (9) ＂ type ellipse, neutral position is constituted by two the half of dividing plates (72) that dock and seals, and have two circular axis holes, can settle the active rotating shaft (30) and the driven spindle (40) of multistage connecting shaft rotor as shown in Figure 4, and two ends form the inside of opening, then form the air compression cavity of approximate 8 fonts that crouch, all a ccontaining group rotor (33) that is shaped on active rotating shaft (30) and the driven spindle (40), (43).

For being applicable to dissimilar multistage type roots compressors, the multiple chamber butt joint cylinder body (7) that the utility model disclosed has half of dividing plate (72) to be provided with air flow channel, or half of dividing plate (72) does not have two kinds of essential structures of air flow channel fully.

For example, when being applicable to as Fig. 7, Fig. 8 and multistage type roots compressor shown in Figure 9, because the circulating path of air compression that it carries out multistage (or section), be to carry out in casing pedestal inside and finish, so must adopt two multiple chamber butt joint cylinder bodies (7) that are provided with air flow channel in half of dividing plate (72).And, set duct on multiple its flange of chamber butt joint cylinder body (7), except as the air inlet, all adopt plate washer that it locking closure is sealed, make compressed air to discharge via the air flow channel of half of dividing plate (72), and enter in the air compression cavity of next stage (or section), proceed air compression.

Moreover based on the cooling purpose, the half of dividing plate (72) of multiple chamber butt joint cylinder body (7) is provided with outside the air flow channel, also can connect cooling tube, to promote the performance of multistage type roots compressor.

And when being applicable to as Figure 10, Figure 11 and multistage type roots compressor shown in Figure 12, because the circulating path of air compression that it carries out multistage (or section), be to carry out, just must adopt two multiple chamber butt joint cylinder bodies (7) that are not provided with air flow channel in half of dividing plate (72) at chassis block external body connecting pipeline.Set duct on multiple its flange of chamber butt joint cylinder body (7) except as the air inlet, then is connected with exterior line, utilizes exterior line that the air that is compressed is transmitted in the air compression cavity that enters next stage (or section), proceeds air compression.

Based on the cooling purpose, the half of dividing plate (72) of multiple chamber butt joint cylinder body (7) is not offered air flow channel, and the water channel in that the inside of this one side of something dividing plate (72) also must be formed for cooling off must be connected with cooling tube, to promote the performance of multistage type roots compressor.

See also Fig. 5 and Fig. 6, butt joint dividing plate of the present utility model (8) is the semiellipse plate body, have a level and connect face (82), and level connects and is concaved with two semicircle axis holes on the face (82).After two butt joint dividing plates (8) are connect face (82) butt joint with its level mutually, can form a slice appearance profile whole dividing plate similar to cylinder block (9); That is, two butt joint dividing plates (8) can form slightly be the oval appearance profile of ＂ O ＂ type whole dividing plate, and have two circular axis holes, can settle the active rotating shaft (30) and the driven spindle (40) of multistage connecting shaft rotor as shown in Figure 4.

For being applicable to dissimilar multistage type roots compressors, the butt joint dividing plate (8) that the utility model disclosed has four kinds of different structures, for example, be applicable to as Fig. 7, Fig. 8, Fig. 9, Figure 15, Figure 16, when Figure 18 or multistage type roots compressor shown in Figure 20, because the circulating path that it carries out multistage (or section) air compression, be to carry out in casing pedestal inside and finish, just must adopt the butt joint dividing plate (8) shown in Fig. 6 (a).Because this its inside of butt joint dividing plate (8) is provided with air flow channel, and form three air gateways and communicate with the external world, wherein two air gateways (83) level of being located at that is symmetrically arranged connects on the face (82), and another air gateway (85) then is located on the side direction end face of butt joint dividing plate (8).Therefore, after two butt joint dividing plates (8) dock up and down and are combined into whole dividing plate, separately the level of being opened in connect on the face (82) about two air gateways (83), counterpart is joined relatively, the inside that constitutes whole dividing plate forms the air flow channel that can be communicated with, and the side direction end face air gateway (85) of one of them butt joint dividing plate (8), forms the import of its inner air runner, the side direction end face air gateway (85) of another butt joint dividing plate (8) then forms the outlet of its inner air runner.

Therefore, two whole dividing plates that the butt joint dividing plate (8) shown in Fig. 6 (a) is formed, when making up with cylinder block (9), the air gateway (85) of one of them butt joint dividing plate (8) must communicate with the air compression cavity of cylinder block (9); And during the single chamber of docking with two butt joint cylinder body (6) combination, the air gateway (85) of one of them butt joint dividing plate (8) must communicate with the air compression cavity that is constituted by these two single chambeies butt joint cylinder bodies (6); Or during the multiple chamber of docking with two butt joint cylinder body (7) combination, wherein the air gateway (85) of any butt joint dividing plate (8) must communicate with one of them the air compression cavity that is constituted by these two multiple chambeies butt joint cylinder bodies (7); Make the compressed air of upper level (or section), must be via the air flow channel of butt joint dividing plate (8), enter in the air compression cavity of next stage (or section) and proceed air compression.

In addition, based on the cooling purpose, also can utilize inside to be connected, and be provided with the butt joint dividing plate (shown in Fig. 6 (d)) of air flow channel and air gateway with cooling tube (89), the butt joint dividing plate (8) that replaces shown in Fig. 6 (a) uses, to promote the performance of multistage type roots compressor.

And when being applicable to as Figure 10, Figure 11 and multistage type roots compressor shown in Figure 12, because the circulating path of air compression that it carries out multistage (or section), be to carry out at chassis block external body connecting pipeline, just must adopt the butt joint dividing plate (8) shown in Fig. 6 (b) with solid construction, that is, be not provided with the butt joint dividing plate (8) of air flow channel and air gateway.

Therefore, two whole dividing plates that the butt joint dividing plate (8) shown in Fig. 6 (b) is formed, when making up with cylinder block (9), must a side of the air compression cavity of cylinder block (9) is hermetic closed; And during the single chamber of docking with two butt joint cylinder body (6) combination, must opening one side of the air compression cavity that constituted by these two single chambeies butt joint cylinder bodies (6) is hermetic closed; Or during the multiple chamber of docking with two butt joint cylinder body (7) combination, must a side of two air compression cavitys being constituted by these two multiple chambeies butt joint cylinder bodies (7) is hermetic closed; Make to enter the compressed air of upper level (or section) in the air compression cavity of next stage (or section), proceed air compression via exterior line.

And based on cooling during purpose, also can utilize and not be provided with air flow channel and air gateway, but water channel inner then that be formed for cooling off, and the butt joint dividing plate that can be connected (shown in Fig. 6 (c)) with cooling tube (88), the butt joint dividing plate (8) that replaces shown in Fig. 6 (b) uses, to promote the performance of multistage type roots compressor.

Because rotor (33) as shown in Figure 4 and active rotating shaft (30), or the multistage connecting shaft rotor that is formed in one of rotor (43) and driven spindle (40), can synchronized take shape in one group of (or section) at different levels rotor (33) on the axle, (43), in the single chamber butt joint of (or section) at different levels corresponding two of using cylinder body (6), or two multiple chamber butt joint cylinder bodies (7), or in the air compression cavity of cylinder block (9), and with two single chamber butt joint its half of dividing plates (62) of cylinder body (6) or two multiple its half of dividing plates (72) of chamber butt joint cylinder body (7), or with two active rotating shaft (30) and driven spindles (40) that dock dividing plate (8) fixed in position multistage connecting shaft rotors, see also Fig. 9, continuation links at an end and one group of synchromesh gear (4) of active rotating shaft (30) with driven spindle (40), and the other end of active rotating shaft (30) is provided with belt pulley or coupling piece (31), after can being driven via motor, promptly constitute multistage type roots compressor.

Therefore, by modular single chamber butt joint cylinder body (6) of the present utility model, multiple chamber butt joint cylinder body (7), butt joint dividing plate (8), and the casing pedestal of the roots compressor that constituted of cylinder block (9), except being the dissimilar multistage type roots compressor applicable to compressed-air actuated circulating path, be to be exclusively used in the multistage connecting shaft rotor that rotor and rotating shaft are formed in one, can be according to the connecting shaft rotor of different progression (or hop count) specification, select different integrated modes, with the combination aspect that changes the casing pedestal, and assembling constitutes and is applicable to and comprises two segment types, three-segment type, the casing pedestal of multistage type roots compressors such as four segment types or five segment types.

For example, assemble and constitute when being applicable to the casing pedestal of two segment type roots compressors, diversified integrated mode is arranged, can select two multiple chamber butt joint cylinder bodies (7) to constitute, also can select the integrated mode of two cylinder blocks (9) collocation butt joint dividing plates (8) to constitute, perhaps select the integrated mode of two single chamber butt joint cylinder bodies (6) cylinder blocks of collocation (9) to constitute.

And among Figure 13 to Figure 20, and illustrate the various combination aspects that are applicable to four segment type roots compressor casing pedestals, illustrate that more specifically the utility model can select different integrated modes, be applicable to the casing pedestal composite state sample of multistage type roots compressors such as comprising two segment types, three-segment type, four segment types or five segment types with variation, so, the utility model has practicability widely really, can provide the industry of multistage type roots compressor fully to use.

Claims (20)

1, the chassis block body structure of a kind of multistage type roots compressor or vacuum pump, include modular cylinder block and butt joint dividing plate, can be according to the connecting shaft rotor of different hop counts (or progression), assembling constitutes and to be applicable to the multistage type roots compressor that two segment types, three-segment type, four segment types or four segment types are above or the casing pedestal of vacuum pump, it is characterized in that

This cylinder block is oval cylinder, and inner hollow forms the air compression cavity, is able to one group of connecting shaft rotor of device in it; And

This butt joint dividing plate is the semiellipse plate body, has a level and connects face, and level connects and is concaved with two semicircle axis holes on the face.

2, the chassis block body structure of multistage type roots compressor as claimed in claim 1 or vacuum pump is characterized in that, this cylinder block is constituted by two half of cylinder blocks.

3, the chassis block body structure of multistage type roots compressor as claimed in claim 1 or 2 or vacuum pump, it is characterized in that, this butt joint dividing plate inside is provided with air flow channel, being formed with three air gateways communicates with the external world, wherein two air gateways are symmetrically arranged and are located at its level and connect on the face, and another air gateway is located on the side end of butt joint dividing plate.

4, the chassis block body structure of multistage type roots compressor as claimed in claim 1 or 2 or vacuum pump is characterized in that, the inner cooling channel that forms of this butt joint dividing plate.

5, the chassis block body structure of multistage type roots compressor as claimed in claim 3 or vacuum pump is characterized in that, this butt joint dividing plate is connected with cooling line.

6, the chassis block body structure of a kind of multistage type roots compressor or vacuum pump, include modular single chamber butt joint cylinder body and multiple chamber butt joint cylinder body, can be according to the connecting shaft rotor of different hop counts (or progression), assembling constitutes and to be applicable to the multistage type roots compressor that three-segment type, four segment types or four segment types are above or the casing pedestal of vacuum pump, it is characterized in that

This list chamber butt joint cylinder body is the semiellipse cylinder, one end forms opening, the other end forms with the half of dividing plate with thickness and seals, the inner hollow of opening end forms half of formula air compression cavity, appropriate position, the outside forms flange, offers the duct on the flange and communicates with the inner half of formula air compression cavity that forms; And on the horizontal composition plane at half of dividing plate place, be concaved with two semicircle axis holes; And

Should multiple chamber butt joint cylinder body also be the semiellipse cylinder, its two end forms opening, neutral position forms the half of dividing plate with thickness, isolate the inner air compression cavity that forms two half of formulas, two sides of each half of formula air compression cavity form flange, offer the duct on this flange, the half of formula air compression cavity that forms with inside communicates; And on the horizontal composition plane at half of dividing plate place, be concaved with two semicircle axis holes.

7, the chassis block body structure of multistage type roots compressor as claimed in claim 6 or vacuum pump is characterized in that, the flange of this list chamber butt joint cylinder body is locked and is stamped plate washer.

8, the chassis block body structure of multistage type roots compressor as claimed in claim 6 or vacuum pump is characterized in that, the flange of this multiple chamber butt joint cylinder body is locked and is stamped plate washer.

9, the chassis block body structure of multistage type roots compressor as claimed in claim 6 or vacuum pump is characterized in that, is opened in the duct on this list chamber butt joint cylinder body flange, is connected with exterior line.

10, the chassis block body structure of multistage type roots compressor as claimed in claim 6 or vacuum pump is characterized in that, is opened in the duct on this multiple chamber butt joint cylinder body flange, is connected with exterior line.

11, the chassis block body structure of multistage type roots compressor as claimed in claim 6 or vacuum pump is characterized in that, the half of dividing plate of this list chamber butt joint cylinder body is connected with cooling line.

12, the chassis block body structure of multistage type roots compressor as claimed in claim 6 or vacuum pump is characterized in that, the half of dividing plate of this multiple chamber butt joint cylinder body is connected with cooling line.

13, the chassis block body structure of multistage type roots compressor as claimed in claim 6 or vacuum pump is characterized in that, the inner cooling channel that forms of the half of dividing plate of this list chamber butt joint cylinder body.

14, the chassis block body structure of multistage type roots compressor as claimed in claim 6 or vacuum pump is characterized in that, the inner cooling channel that forms of the half of dividing plate of this multiple chamber butt joint cylinder body.

15, the chassis block body structure of a kind of multistage type roots compressor or vacuum pump, with two described single chamber butt joint cylinder bodies of claim 6, constitute the casing pedestal that is applicable to two segment type roots compressors (or vacuum pump) with cylinder block assembling, it is characterized in that, this cylinder block is the oval cylinder of integrated type or the oval cylinder that can separate up and down, its inner hollow forms the air compression cavity, is able to one group of connecting shaft rotor of device in it.

16, the chassis block body structure of a kind of multistage type roots compressor or vacuum pump, it is characterized in that, this kind chassis block body structure is one to be applicable to the casing pedestal of two segment type roots compressors (or vacuum pump), and it is docked mutually by two multiple chambeies butt joint cylinder bodies as claimed in claim 6 and forms.

17, the chassis block body structure of a kind of multistage type roots compressor or vacuum pump, dock mutually with two described multiple chamber butt joint cylinder bodies of claim 6, dock the dividing plate assembling again with a cylinder block and two and constitute the casing pedestal that is applicable to three-segment type roots compressor (or vacuum pump), it is characterized in that, this cylinder block is the oval cylinder of integrated type or the oval cylinder that can separate up and down, its inner hollow forms the air compression cavity, must install one group of connecting shaft rotor in it, and this butt joint dividing plate is the semiellipse plate body, have a level and connect face, level connects and is concaved with two semicircle axis holes on the face.

18, the chassis block body structure of a kind of multistage type roots compressor or vacuum pump, with four described single chamber butt joint cylinder bodies of claim 6, constitute the casing pedestal that is applicable to three-segment type roots compressor (or vacuum pump) with cylinder block assembling, it is characterized in that, this cylinder block is the oval cylinder of integrated type or the oval cylinder that can separate up and down, its inner hollow forms the air compression cavity, must install one group of connecting shaft rotor in it.

19, the chassis block body structure of a kind of multistage type roots compressor or vacuum pump, dock cylinder body and/or multiple chamber butt joint cylinder body with modular single chamber by the described cylinder block of claim 1, connecting shaft rotor according to different hop counts (or progression), assembling constitutes the casing pedestal that is applicable to the multistage type roots compressor (or vacuum pump) more than four segment types or four segment types, it is characterized in that

This list chamber butt joint cylinder body is the semiellipse cylinder, one end forms opening, the other end forms with the half of dividing plate with thickness and seals, the inner hollow of opening end forms half of formula air compression cavity, appropriate position, the outside forms flange, offers the duct on the flange and communicates with the inner half of formula air compression cavity that forms; And on the horizontal composition plane at half of dividing plate place, be concaved with two semicircle axis holes; And

Should multiple chamber butt joint cylinder body also be the semiellipse cylinder, its two end forms opening, neutral position forms the half of dividing plate with thickness, isolate the inner air compression cavity that forms two half of formulas, two sides of each half of formula air compression cavity form flange, offer the duct on this flange, the half of formula air compression cavity that forms with inside communicates; And on the horizontal composition plane at half of dividing plate place, be concaved with two semicircle axis holes.

20, the chassis block body structure of a kind of multistage type roots compressor or vacuum pump, dock cylinder body and/or multiple chamber butt joint cylinder body with modular single chamber by the described cylinder block of claim 1, butt joint dividing plate, connecting shaft rotor according to different hop counts (or progression), assembling constitutes the casing pedestal that is applicable to the multistage type roots compressor (or vacuum pump) more than four segment types or four segment types, it is characterized in that

This list chamber butt joint cylinder body is the semiellipse cylinder, one end forms opening, the other end forms with the half of dividing plate with thickness and seals, the inner hollow of opening end forms half of formula air compression cavity, appropriate position, the outside forms flange, offers the duct on the flange and communicates with the inner half of formula air compression cavity that forms; And on the horizontal composition plane at half of dividing plate place, be concaved with two semicircle axis holes; And

Should multiple chamber butt joint cylinder body also be the semiellipse cylinder, its two end forms opening, neutral position forms the half of dividing plate with thickness, isolate the inner air compression cavity that forms two half of formulas, two sides of each half of formula air compression cavity form flange, offer the duct on this flange, the half of formula air compression cavity that forms with inside communicates; And on the horizontal composition plane at half of dividing plate place, be concaved with two semicircle axis holes.

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