CN208200981U - A kind of novel and multifunctional marsh-gas fermentation tank - Google Patents

Abstract

The utility model provides a kind of novel and multifunctional marsh-gas fermentation tank, including driving motor, support plate, cover, rapid locking device, inner canister of fermenting, the outer jar structure of temperature control heating, supporting leg, drainage conduit, machinery valve ionizes filter core axle construction, box coupling, detachable quickly stirring impeller structure, intelligent cabinet, stainless steel cover and feed hopper, the driving motor pass through the middle and upper part that the support crab bolt being arranged in pairs is mounted on cover；The cover left and right ends pass through the upper end that rapid locking device is mounted on fermentation inner canister respectively.The utility model screw rod, paddle main body, locking nut, the setting of riffled tube and fixing pipe are conducive to replace and dismantle paddle main body, are convenient for operation, can reduce manipulation strength, and can be improved and puddle stirring efficiency；Piece is warmed, the setting of outer can body and insulating layer is conducive in time be internally heated fermentation inner canister, guarantees fermentation efficiency, while can play good insulation effect.

Description

A kind of novel and multifunctional marsh-gas fermentation tank

Technical field

The utility model belongs to biogas fermentation equipment technical field, more particularly to a kind of novel and multifunctional biogas fermentation Tank.

Background technique

Biogas fermentation is also known as anaerobic digestion or anaerobic fermentation, refers to organic substance (excrement, stalk, the bits of such as people and animals poultry Shell, weeds etc.) under certain moisture, temperature and anaerobic condition, it is generated based on methane by anaerobe metabolism The flammable mixed gas of ingredient is wanted, which is referred to as biogas, and wherein temperature is to influence biogas yield One of principal element participates in most important methanogen in the anaerobe of metabolism and needs under suitable temperature environment Constantly metabolism and generative propagation, can be only achieved higher biogas yield.If temperature is more high or low than the preference temperature needed for it, Its growth may be all suppressed, or even be difficult to survive.The microorganism for participating in anaerobic fermentation can divide according to the preference temperature needed for it Preference temperature for psychrophile, mesophilic property microorganism and high temperature resistant microorganism, psychrophile is lower than 20 DEG C, Degradation effect of organic compound and biogas generation rate are lower, thus anaerobic fermentation operation is uneconomical at such a temperature；High temperature resistant microorganism is suitable Suitable temperature range is generally 50-60 DEG C, but existing methanogen type is less in the case of a high temperature, therefore in anaerobic fermentation process It is very sensitive to the interference occurred in organic matter supply or marsh-gas fermentation tank operational process, it is unable to maintain that the stabilization of anaerobic fermentation Property, and it is higher for the energy for maintaining high temperature and needing, thus anaerobic fermentation operation is also uneconomical under the temperature conditions.It is most of The optimum growth temp of methanogen is known all within the scope of 37-42 DEG C, and thus, temperature when anaerobic fermentation actual motion is generally controlled System is within the scope of 20-45 DEG C of medium temperature, and the stability of anaerobic fermentation is preferable within this temperature range, biogas output is also relatively high. In carrying out anaerobic fermentation process, the production capacity of biogas is not only considered, it is also contemplated that keep energy consumed by medium temperature, thus The best net production capacity temperature general control of anaerobic fermentation is within the scope of 30-40 DEG C.It, will be by practical anaerobic fermentation operational process The biogas slurry that organic substance and water are mixed to form, which is placed in closed marsh-gas fermentation tank, carries out biogas fermentation, usual marsh-gas fermentation tank In biogas slurry from top to bottom will form scum layer, supernatant layer, active layer and sediment layer.Since the most of region temperatures in China are low In 30 DEG C, thus need to heat the biogas slurry in marsh-gas fermentation tank.Marsh-gas fermentation tank common at present, in marsh-gas fermentation tank Tank bottom and tank skin surrounding heat exchanger tube is set, the biogas slurry in marsh-gas fermentation tank is heated by heat exchanger tube, but due to natural pond The heating conduction of liquid is poor, will lead to the biogas slurry in the middle part of marsh-gas fermentation tank in this way and deposits with the biogas slurry being located near heat exchanger tube In the biggish temperature difference, thus heat exchanger tube and the heat transfer effect of biogas slurry are less desirable；In addition, due to biogas slurry heating conduction compared with Difference, and heat exchanger tube is positioned only at the tank bottom and tank skin of marsh-gas fermentation tank, the shapes and sizes of such fermentor just receive limit System.In addition to this, since the viscosity of biogas slurry is higher, in long-term anaerobic fermentation process, the tube wall of heat exchanger tube is easy fouling, in this way The heat transfer effect of heat exchanger tube and biogas slurry can be further decreased, to influence biogas yield.

But existing marsh-gas fermentation tank, there is also lacking to be stirred function, heating temperature can not intelligent control and guarantor The problem of temp effect difference.

Therefore, the novel and multifunctional marsh-gas fermentation tank of one kind is invented to be very necessary.

Utility model content

In order to solve the above-mentioned technical problem, the utility model provides a kind of novel and multifunctional marsh-gas fermentation tank, to solve Existing marsh-gas fermentation tank there is lacking to be stirred function, heating temperature can not intelligent control and heat insulation effect difference ask Topic.A kind of novel and multifunctional marsh-gas fermentation tank, including driving motor, support plate, cover, rapid locking device, inner canister of fermenting, temperature Outer jar structure, supporting leg, drainage conduit, machinery valve, ionization filter core axle construction, box coupling, detachable quickly stirring are heated in control Impeller structure, intelligent cabinet, stainless steel cover and feed hopper, the driving motor pass through the support crab bolt being arranged in pairs and are mounted on tank The middle and upper part of lid；The cover left and right ends pass through the upper end that rapid locking device is mounted on fermentation inner canister respectively；The hair Ferment inner canister is placed on the inside middle position of the outer jar structure of temperature control heating；Bolt is mounted on outside temperature control heating the supporting leg respectively The bottom surrounding position of jar structure；The top center position screw thread that the drainage conduit longitudinally runs through the outer jar structure of temperature control heating connects It connects in the bottom side middle position of fermentation inner canister；The front surface middle position of drainage conduit is arranged in the machinery valve；Described The inside middle position that cover is longitudinally run through in ionization filter core axle construction upper end connects the output of driving motor by box coupling Axis；The lower part of the ionization filter core axle construction extends to the inside middle position of fermentation inner canister；It is described detachable quickly to stir Mix the external middle position that impeller structure is longitudinally socketed in ionization filter core axle construction；The intelligent cabinet bolt is mounted on temperature control heating The upper left quarter of outer jar structure；The stainless steel cover is connected at the upper inlet of feed hopper；The feed hopper runs through cover Inside left part；The detachable quick stirring impeller structure includes screw rod, paddle main body, locking nut, riffled tube and Fixing pipe, the inside middle position of screw rod one end welding paddle main body, the other end run through the inside spiral shell of locking nut Line is connected to the inboard outer of riffled tube；The riffled tube difference transverse weld is in two wall position of the left and right of fixing pipe； Setting is threadedly coupled between the screw rod and locking nut.

Preferably, the paddle main body front surface lateral mid-point welding there are four or more than four three Angle convex block.

Preferably, the feed hopper is connected to setting with fermentation inner canister.

Preferably, the paddle main body is provided with multiple；The paddle main body specifically uses ellipse stainless Steel leaf.

Preferably, the riffled tube is provided with multiple；Between the riffled tube between the upper and lower away from being set as three Centimetre to five centimetres.

Preferably, the outer jar structure of the temperature control heating includes warm piece, outer can body, insulating layer, temperature control sensor and Rubber pad, longitudinal screw is connected to two wall upper position of inside of outer can body or so to the warm piece respectively；The guarantor Warm layer is glued to the upper inside wall of outer can body；The lower part of warm piece is arranged in the temperature control sensor；The temperature control passes Sensor connects setting with outer can body screw；The rubber pad is glued to the inside bottom of outer can body.

Preferably, there are two warm piece settings；The warm piece specifically uses PTC heating sheet；Described is outer Can body specifically uses stainless cylinder of steel；The spongy layer that the insulating layer uses with a thickness of three centimetres to five centimetres.

Preferably, there are two temperature control sensor settings；The temperature control sensor specifically uses model The temperature sensor of CWDZ11.

Preferably, setting is bolted between the outer can body and fermentation inner canister.

Preferably, the ionization filter core axle construction includes connecting tube, agitating shaft, main shaft, electromagnetic clutch, locking screw Bolt, auxiliary axis and filter core net, the connecting tube longitudinal measure is in the lower end of agitating shaft；Described main shaft one end key connection electromagnetism from Clutch, the other end are plugged on the lower inside of connecting tube；The clamping screw is threaded in the connection of main shaft and connecting tube Place；Described auxiliary axis one end is bolted the inside bottom middle position of filter core net, and the other end is keyed electromagnetic clutch.

Preferably, the filter core net specifically uses curved stainless steel net.

Preferably, setting is bolted between the fixing pipe and agitating shaft.

Preferably, the intelligent cabinet includes display screen, PLC, master control switch and loudspeaker, the display screen transverse direction spiral shell Bolt is mounted on the inside upper part position of intelligent cabinet；The PLC cross bolts are mounted on the inside middle position of intelligent cabinet；It is described Master control switch and loudspeaker laterally bolt is mounted on the lower inside of intelligent cabinet side by side.

Preferably, the loudspeaking implement body uses buzzer.

Preferably, the output end of display screen conducting wire connection PLC.

Preferably, the output end of speaker wire connection PLC.

Preferably, the input terminal of master control switch wire connection PLC.

Preferably, the output end of driving motor conducting wire connection PLC.

Preferably, the output end of the warm piece conducting wire connection PLC.

Preferably, the input terminal of temperature control sensor conducting wire connection PLC.

Preferably, the output end of electromagnetic clutch conducting wire connection PLC.

Compared with prior art, the utility model has the following beneficial effects:

1. in the utility model, the screw rod, paddle main body, locking nut, the setting of riffled tube and fixing pipe, Be conducive to replace and dismantle paddle main body, be convenient for operation, can reduce manipulation strength, and can be improved and puddle stirring efficiency.

2. in the utility model, the warm piece, the setting of outer can body and insulating layer is conducive in time in fermentation Tank is internally heated, and guarantees fermentation efficiency, while can play good insulation effect.

3. in the utility model, the setting of the temperature control sensor and rubber pad is conducive to detect fermentation inner canister in time Internal temperature, and the excessively high influence fermentation of temperature can be prevented, while can be by rubber pad to hair by PLC intelligent control temperature Ferment inner canister plays the role of good shock-absorbing protecting.

4. in the utility model, the connecting tube, agitating shaft, main shaft, electromagnetic clutch, clamping screw, auxiliary axis and filter The setting of core net is conducive to ionize filter core net in time, whether can need to be determined filter core net according to discharge as agitating shaft revolves Turn, can reduce manipulation strength.

5. in the utility model, the display screen, PLC, master control switchs and the setting of loudspeaker, it is aobvious to be conducive to intelligence Show, intelligent alarm, and can be manually controlled, so that more intelligent, automation.

6. in the utility model, the paddle main body is provided with multiple；The paddle main body specifically uses ellipse Round stainless steel leaf is conducive to adequately stir the raw material inside fermentation inner canister, and efficiency is puddled in guarantee, and can guarantee Uniformity, the consistency of stirring, while can avoid the problem of paddle main body is got rusty.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model.

Fig. 2 is the structural schematic diagram of the detachable quick stirring impeller structure of the utility model.

Fig. 3 is the structural schematic diagram of the outer jar structure of temperature control heating of the utility model.

Fig. 4 is the structural schematic diagram of the ionization filter core axle construction of the utility model.

Fig. 5 is the structural schematic diagram of the intelligent cabinet of the utility model.

Fig. 6 is the electrical wiring schematic diagram of the utility model.

In figure:

1, driving motor；2, support plate；3, cover；4, rapid locking device；5, fermentation inner canister；6, temperature control heating outer tank knot Structure；61, piece is warmed；62, outer can body；63, insulating layer；64, temperature control sensor；65, rubber pad；7, supporting leg；8, drainage conduit；9, Machinery valve；10, filter core axle construction is ionized；101, connecting tube；102, agitating shaft；103, main shaft；104, electromagnetic clutch；105, Clamping screw；106, auxiliary axis；107, filter core net；11, box coupling；12, detachable quickly stirring impeller structure；121, screw rod； 122, paddle main body；123, locking nut；124, riffled tube；125, fixing pipe；126, triangle convex；13, intelligent cabinet； 131, display screen；132,PLC；133, master control switchs；134, loudspeaker；14, stainless steel cover；15, feed hopper.

Specific embodiment

The utility model is described further below in conjunction with attached drawing:

Embodiment:

As shown in attached drawing 1 to attached drawing 6

The utility model provides one kind novel and multifunctional marsh-gas fermentation tank, including driving motor 1, support plate 2, cover 3, Rapid locking device 4, inner canister 5 of fermenting, the outer jar structure 6 of temperature control heating, supporting leg 7, drainage conduit 8, machinery valve 9 ionize filter shaft knot Structure 10, box coupling 11, detachable quickly stirring impeller structure 12, intelligent cabinet 13, stainless steel cover 14 and feed hopper 15, it is described Driving motor 1 passes through the middle and upper part that 2 bolt of support plate being arranged in pairs is mounted on cover 3；3 left and right ends of the cover difference The upper end of fermentation inner canister 5 is mounted on by rapid locking device 4；The fermentation inner canister 5 is placed on the outer jar structure 6 of temperature control heating Inside middle position；Bolt is mounted on the bottom surrounding position of the outer jar structure 6 of temperature control heating to the supporting leg 7 respectively；Described The longitudinal top center position through the outer jar structure 6 of temperature control heating of drainage conduit 8 is threaded in the bottom side interposition of fermentation inner canister 5 It sets；The front surface middle position of drainage conduit 8 is arranged in the machinery valve 9；10 upper end of ionization filter core axle construction is vertical The output shaft of driving motor 1 is connected by box coupling 11 to the inside middle position through cover 3；The ionization filter core The lower part of axle construction 10 extends to the inside middle position of fermentation inner canister 5；The detachable quick stirring impeller structure 12 is longitudinal It is socketed in the external middle position of ionization filter core axle construction 10；13 bolt of intelligent cabinet is mounted on the outer jar structure of temperature control heating 6 upper left quarter；The stainless steel cover 14 is connected at the upper inlet of feed hopper 15；The feed hopper 15 runs through cover 3 Inside left part；The detachable quick stirring impeller structure 12 include screw rod 121, paddle main body 122, locking nut 123, Riffled tube 124 and fixing pipe 125, the inside middle position of 121 one end of screw rod welding paddle main body 122 are another End is connected to the inboard outer of riffled tube 124 through the internal whorl of locking nut 123；The riffled tube 124 is distinguished Transverse weld is in two wall position of the left and right of fixing pipe 125；Setting is threadedly coupled between the screw rod 121 and locking nut 123.

In above-described embodiment, specifically, there are four the front surface lateral mid-point welding of the paddle main body 122 Or more than four triangle convexs 126.

In above-described embodiment, specifically, the feed hopper 15 is connected to setting with fermentation inner canister 5.

In above-described embodiment, specifically, the paddle main body 122 be provided with it is multiple；The paddle main body 122 It is specific to use oval stainless steel leaf.

In above-described embodiment, specifically, the riffled tube 124 be provided with it is multiple；Between the riffled tube 124 Between the upper and lower away from being set as three centimetres to five centimetres.

In above-described embodiment, specifically, the outer jar structure 6 of the temperature control heating includes warm piece 61, outer can body 62 is protected Warm layer 63, temperature control sensor 64 and rubber pad 65, longitudinal screw is connected to the interior of outer can body 62 to the warm piece 61 respectively Two wall upper position of side or so；The insulating layer 63 is glued to the upper inside wall of outer can body 62；The temperature control sensor 64 are arranged in the lower part of warm piece 61；The temperature control sensor 64 connects setting with outer 62 screw of can body；The rubber Pad 65 is glued to the inside bottom of outer can body 62.

In above-described embodiment, specifically, there are two the settings of warm piece 61；The warm piece 61 specifically uses PTC heating sheet；The outer can body 62 specifically uses stainless cylinder of steel；The insulating layer 63 is using with a thickness of three centimetres to five Centimetre spongy layer.

In above-described embodiment, specifically, there are two the settings of temperature control sensor 64；The temperature control sensor 64 has Body uses the temperature sensor of model CWDZ11.

In above-described embodiment, specifically, being bolted setting between the outer can body 62 and fermentation inner canister 5.

In above-described embodiment, specifically, the ionization filter core axle construction 10 includes connecting tube 101, agitating shaft 102 is main Axis 103, electromagnetic clutch 104, clamping screw 105, auxiliary axis 106 and filter core net 107,101 longitudinal measure of connecting tube exist The lower end of agitating shaft 102；Described 103 one end of main shaft is keyed electromagnetic clutch 104, and the other end is plugged on connecting tube 101 Lower inside；The clamping screw 105 is threaded in the junction of main shaft 103 and connecting tube 101；The auxiliary axis 106 One end is bolted the inside bottom middle position of filter core net 107, and the other end is keyed electromagnetic clutch 104.

In above-described embodiment, specifically, the filter core net 107 specifically uses curved stainless steel net.

In above-described embodiment, specifically, being bolted setting between the fixing pipe 125 and agitating shaft 102.

In above-described embodiment, specifically, the intelligent cabinet 13 includes display screen 131, PLC132,133 He of master control switch Loudspeaker 134,131 cross bolts of display screen are mounted on the inside upper part position of intelligent cabinet 13；The PLC132 is horizontal The inside middle position of intelligent cabinet 13 is mounted on to bolt；The master control switch 133 and loudspeaker 134 laterally pacify side by side by bolt Mounted in the lower inside of intelligent cabinet 13.

In above-described embodiment, specifically, the loudspeaker 134 specifically uses buzzer.

In above-described embodiment, specifically, the output end of 131 conducting wire of the display screen connection PLC132.

In above-described embodiment, specifically, the output end of 134 conducting wire of the loudspeaker connection PLC132.

In above-described embodiment, specifically, the input terminal of 133 conducting wire of the master control switch connection PLC132.

In above-described embodiment, specifically, the output end of 1 conducting wire of the driving motor connection PLC132.

In above-described embodiment, specifically, the output end of warm 61 conducting wire of the piece connection PLC132.

In above-described embodiment, specifically, the input terminal of 64 conducting wire of the temperature control sensor connection PLC132.

In above-described embodiment, specifically, the output end of 104 conducting wire of the electromagnetic clutch connection PLC132.

Working principle

In the utility model, in use, will be thrown to fermentation materials by opening stainless steel cover 14 via feed hopper 15 Inside inner canister 5 of fermenting, master control switch 133 is opened, so that driving motor 1 drives ionization filter core axle construction 10 and detachably quickly stirs 12 high speed rotation of impeller structure is mixed, constantly material is stirred by paddle main body 122, guarantees that stirring is more uniform, at any time Constantly the material inside fermentation inner canister 5 is heated via warm piece 61, it is ensured that fermentation efficiency passes through temperature control sensor 64 Temperature detection work is carried out, guarantees fermentation temperature, during which can control the clutch shape of electromagnetic clutch 104 by PLC132 at any time State, real-time ensuring emissions requirements；The design intelligence degree is higher, and manual operation is simple, it is ensured that fermentation efficiency.

Using technical solution described in the utility model or those skilled in the art in technical solutions of the utility model Under inspiration, similar technical solution is designed, and reaches above-mentioned technical effect, is the protection model for falling into the utility model It encloses.

Claims (10)

1. a kind of novel and multifunctional marsh-gas fermentation tank, which is characterized in that the novel and multifunctional marsh-gas fermentation tank includes driving Motor (1), support plate (2), cover (3), rapid locking device (4) ferment inner canister (5), the outer jar structure (6) of temperature control heating, supporting leg (7), drainage conduit (8), machinery valve (9) ionize filter core axle construction (10), box coupling (11), detachable quick paddle Structure (12), intelligent cabinet (13), stainless steel cover (14) and feed hopper (15), the driving motor (1), which passes through, to be arranged in pairs Support plate (2) bolt is mounted on the middle and upper part of cover (3)；Described cover (3) left and right ends pass through rapid locking device (4) respectively It is mounted on the upper end of fermentation inner canister (5)；The fermentation inner canister (5) is placed among the inside of the outer jar structure (6) of temperature control heating Position；Bolt is mounted on the bottom surrounding position of the outer jar structure (6) of temperature control heating to the supporting leg (7) respectively；The discharge Top center position of the pipe (8) longitudinally through the outer jar structure (6) of temperature control heating is threaded among the bottom side of fermentation inner canister (5) Position；The machinery valve (9) is arranged in the front surface middle position of drainage conduit (8)；The ionization filter core axle construction (10) the inside middle position that cover (3) is longitudinally run through in upper end passes through the output of box coupling (11) connection driving motor (1) Axis；The lower part of the ionization filter core axle construction (10) extends to the inside middle position of fermentation inner canister (5)；Described is detachable Quickly stirring impeller structure (12) is longitudinally socketed in the external middle position of ionization filter core axle construction (10)；The intelligent cabinet (13) Bolt is mounted on the upper left quarter of the outer jar structure (6) of temperature control heating；The stainless steel cover (14) is connected to the upper of feed hopper (15) Portion's entrance；The feed hopper (15) runs through the inside left part of cover (3)；The detachable quick stirring impeller structure (12) It is described including screw rod (121), paddle main body (122), locking nut (123), riffled tube (124) and fixing pipe (125) The inside middle position of paddle main body (122) is welded in screw rod (121) one end, and the other end runs through the inside of locking nut (123) It is threaded in the inboard outer of riffled tube (124)；Riffled tube (124) the difference transverse weld is in fixing pipe (125) two wall position of left and right；Setting is threadedly coupled between the screw rod (121) and locking nut (123).

2. novel and multifunctional marsh-gas fermentation tank as described in claim 1, which is characterized in that the temperature control heating outer tank knot Structure (6) includes warming piece (61), outer can body (62), insulating layer (63), temperature control sensor (64) and rubber pad (65), described Longitudinal screw is connected to two wall upper position of inside of outer can body (62) or so to warm piece (61) respectively；The insulating layer (63) it is glued to the upper inside wall of outer can body (62)；Temperature control sensor (64) setting is in the lower part of warm piece (61)； The temperature control sensor (64) connects setting with outer can body (62) screw；The rubber pad (65) is glued to outer can body (62) inside bottom.

3. novel and multifunctional marsh-gas fermentation tank as described in claim 1, which is characterized in that the ionization filter core axle construction It (10) include connecting tube (101), agitating shaft (102), main shaft (103), electromagnetic clutch (104), clamping screw (105), auxiliary axis (106) and filter core net (107), lower end of the connecting tube (101) longitudinal measure in agitating shaft (102)；The main shaft (103) one end key connection electromagnetic clutch (104), the other end are plugged on the lower inside of connecting tube (101)；The locking screw Bolt (105) is threaded in the junction of main shaft (103) and connecting tube (101)；Described auxiliary axis (106) one end is bolted filter The inside bottom middle position of core net (107), the other end are keyed electromagnetic clutch (104).

4. novel and multifunctional marsh-gas fermentation tank as described in claim 1, which is characterized in that the paddle main body (122) it is provided with multiple；The paddle main body (122) is specifically using oval stainless steel leaf.

5. novel and multifunctional marsh-gas fermentation tank as claimed in claim 2, which is characterized in that warm piece (61) setting There are two；The warm piece (61) specifically uses PTC heating sheet；The outer can body (62) specifically uses stainless cylinder of steel； The insulating layer (63) is using the spongy layer with a thickness of three centimetres to five centimetres.

6. novel and multifunctional marsh-gas fermentation tank as claimed in claim 3, which is characterized in that filter core net (107) tool Body uses curved stainless steel net.

7. novel and multifunctional marsh-gas fermentation tank as claimed in claim 2, which is characterized in that the temperature control sensor (64) There are two settings；The temperature control sensor (64) specifically uses the temperature sensor of model CWDZ11.

8. novel and multifunctional marsh-gas fermentation tank as described in claim 1, which is characterized in that the feed hopper (15) and hair Ferment inner canister (5) connection setting.

9. novel and multifunctional marsh-gas fermentation tank as claimed in claim 2, which is characterized in that the outer can body (62) and Setting is bolted between fermentation inner canister (5).

10. novel and multifunctional marsh-gas fermentation tank as described in claim 1, which is characterized in that intelligent cabinet (13) packet It includes display screen (131), PLC (132), master control switchs (133) and loudspeaker (134), the display screen (131) cross bolts peace Mounted in the inside upper part position of intelligent cabinet (13)；Described PLC (132) cross bolts are mounted among the inside of intelligent cabinet (13) Position；The master control switch (133) and the lateral bolt side by side of loudspeaker (134) are mounted on the lower inside of intelligent cabinet (13).