CN213446934U

CN213446934U - Gracilaria verrucosa soaking, cooking and transporting circulation system

Info

Publication number: CN213446934U
Application number: CN202021800133.4U
Authority: CN
Inventors: 黄海腾
Original assignee: Fujian Tianyuan Xingda Biotechnology Co ltd
Current assignee: Fujian Tianyuan Xingda Biotechnology Co ltd
Priority date: 2020-08-26
Filing date: 2020-08-26
Publication date: 2021-06-15
Anticipated expiration: 2030-08-26

Abstract

The utility model relates to a gracilaria vegetable soaking, cooking and transporting circulation system, which comprises a production workshop and a pneumatic diaphragm pump, wherein a soaking pool and a cooking pool are arranged in the production workshop, the upper parts of the soaking pool and the cooking pool are positioned on a second layer of the production workshop, the lower parts of the soaking pool and the cooking pool are positioned on a first layer of the production workshop, and the bottom of the soaking pool is provided with a water outlet, an alkali liquor discharging port and a material discharging port; the water outlet is connected with a clean water tank, an alkali liquor outlet is connected with an alkali liquor tank, filtering grids are arranged in the clean water tank and the alkali liquor tank respectively, a first water pump and a second water pump are arranged in the clean water tank and the alkali liquor tank respectively, and outlet ends of the first water pump and the second water pump are connected with a first pipeline and a second pipeline respectively; the discharge opening is provided with a discharge switch which is connected with a conveying pipeline, the conveying pipeline is connected with a pneumatic diaphragm pump, and the outlet end of the conveying pipeline is positioned at the tank opening at the upper end of the cooking tank. Can recycle the alkali liquor and the clear water, and directly convey the soaked gracilaria verrucosa to the cooking pool.

Description

Gracilaria verrucosa soaking, cooking and transporting circulation system

Technical Field

The utility model relates to a gracilaria vegetable processing equipment technical field, especially gracilaria vegetable soaks the transportation circulation system that cooks.

Background

Gracilaria verrucosa, Rhodophyceae. The algae body is purple brown or purple yellow and green. Cartilaginous bone, cylindrical or linear, and clustered, up to 5-60 cm. A uniaxial type. The branches of the main branches are 1-2 times, and are generally partial or intergrowth. The apical end has a apical cell which divides laterally into secondary cells and then continues to divide into medullary and cortical cells. The four-part sporangium has crisscross division, homozygote or heterozygote, spherical or hemispherical fruit capsule, and has or does not have coracoid protrusion at the top. The fixer is disc-shaped. China is distributed along the coast and grows on gravel in the gulf. Agar (Agar) is also called Agar, commonly called Agar, jelly or jelly, gracilaria is the main raw material for producing low viscosity high water holding capacity Agar, according to the definition of the United states pharmacopoeia, Agar is a hydrophilic colloid extracted from certain algae of Rhodophyceae; chemically, agar is a kind of high molecular polysaccharide with galactose as main component.

In the existing agar production process, a series of operations such as soaking, cleaning, carrying, slitting, transferring and the like need to be carried out manually. In the traditional production process, the gracilaria verrucosa needs to be soaked by clear water, the clear water is discharged after the soaking by the clear water is finished, then alkali liquor is introduced for soaking, and the alkali liquor is discharged after the soaking by the alkali liquor is finished; and finally, discharging the soaked gracilaria verrucosa from the soaking pool, placing the gracilaria verrucosa in a designated position, and finally transferring the gracilaria verrucosa to a cooking pool by workers for cooking, wherein the waste of water and alkali liquor in the whole process is large, and the physical consumption is great.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, the present invention aims to provide a transportation circulation system for soaking, steaming and boiling gracilaria verrucosa, which recycles alkali liquor and clear water and directly conveys the soaked gracilaria rucosa to a steaming and boiling tank.

The embodiment of the utility model provides an in adopt following scheme to realize: providing a gracilaria verrucosa soaking, cooking and transporting circulation system, which comprises a production workshop and a pneumatic diaphragm pump, wherein a soaking pool and a cooking pool are installed in the production workshop, the upper parts of the soaking pool and the cooking pool are positioned on a second layer of the production workshop, the lower parts of the soaking pool and the cooking pool are positioned on a first layer of the production workshop, and the bottom of the soaking pool is provided with a water outlet, an alkali liquor outlet and a material outlet; the water outlet is connected with a clean water tank, the alkali liquor outlet is connected with an alkali liquor tank, filter grids are arranged in the clean water tank and the alkali liquor tank respectively, a first water pump and a second water pump are arranged in the clean water tank and the alkali liquor tank respectively, outlet ends of the first water pump and the second water pump are connected with a first pipeline and a second pipeline respectively, and outlet ends of the first pipeline and the second pipeline are located at a tank opening at the upper end of the soaking tank; the discharging opening is provided with a discharging switch, the discharging switch is connected with a conveying pipeline, the conveying pipeline is provided with the pneumatic diaphragm pump, and the outlet end of the conveying pipeline is located at the tank opening at the upper end of the cooking tank.

In one embodiment of the present invention, the water outlet is connected to a first drain pipe, the alkaline solution outlet is connected to a second drain pipe, a first valve is disposed in the first drain pipe, and a second valve is disposed in the second drain pipe; the first valve comprises a first valve body, a first valve core, a valve rod and a return spring, the valve rod of the first valve is connected with a first connecting rod, a first hanging frame is arranged on the outer wall of the top of the soaking pool, a first handle is hinged to the first hanging frame, and the tail end of the first handle is hinged to the first connecting rod; the structure of the second valve is the same as that of the first valve, a valve rod of the second valve is connected with a second connecting rod, a second hanging frame is arranged on the outer wall of the top of the soaking pool, a second handle is hinged to the second hanging frame, and the tail end of the second handle is hinged to the second connecting rod; the first water drainage pipe is connected with the clean water tank, and the second water drainage pipe is connected with the alkali liquor tank.

The utility model relates to an embodiment, two T type spouts, two have been seted up on the lateral wall at fermentation vat top all install the slider in the T type spout, two a plurality of screw holes have been seted up to the side from the top down equidistant of the notch left part and the right part of T type spout, the front surface of slider is provided with spacing ring, and in the end of the first in command penetrated one of them spacing ring, the end of the second in command penetrated in another spacing ring.

The utility model discloses an in the embodiment, first connecting rod the cover is equipped with first sleeve, second sleeve on the second connecting rod outer wall respectively.

In one embodiment of the present invention, the discharge switch includes a right-angle two-way switch valve body, one end is a feed port and is butted with the discharge port, and the other end is a discharge port; a telescopic cylinder mounting frame is arranged on the outer side wall of the switch valve body, which is opposite to the feed inlet in butt joint with the discharge outlet, a telescopic cylinder is mounted on the telescopic cylinder mounting frame, and a push rod of the telescopic cylinder penetrates into the switch valve body; the head of the push rod of the telescopic cylinder is connected with a second valve core which is matched with the feed port.

In an embodiment of the present invention, the telescopic cylinder mounting frame includes a first fixing flange, a first connecting flange and two C-shaped steel plates, the first fixing flange is fixed on the outer side wall of the switch valve body opposite to the feed inlet, the first connecting flange is fixedly connected with the first fixing flange, the two C-shaped steel plates are symmetrically mounted on the first connecting flange, and the front end of the telescopic cylinder body is fixed on the first connecting flange and located between the two C-shaped steel plates; a top rod is connected between the tail parts of the two C-shaped steel plates, a bolt horizontally penetrates through the top rod, and the front end of the bolt props against the tail end of the telescopic cylinder push rod; one end of the ejector rod is hinged in the steel groove at the tail part of one C-shaped steel plate, and the other end of the ejector rod is fixed in the steel groove of the other C-shaped steel plate through a bolt.

The utility model relates to an embodiment, the discharge gate of switch valve body is connected with transparent observation tube, the observation tube through the second flange with switch valve body's discharge gate is connected, the other end of observation tube passes through the third flange and connects pipeline.

The utility model discloses an in the embodiment, the cross-section of second case is the same with the cross sectional shape and the area of switch valve body feed inlet completely, be provided with the direction spout of second case on the lateral wall in the switch valve body.

The utility model has the advantages that: the utility model provides a gracilaria vegetable soaks boils transport cycle system, traditional soaking bath clear water, alkali lye, the discharge switch of gracilaria vegetable all sets up in the soaking bath bottom, but the joining of clear water, alkali lye, gracilaria vegetable is all from the soaking bath top joining, and the soaking bath generally by the height of 4-5m, the top of soaking bath is located two layers of workshop usually, so in order to add and discharge clear water, alkali lye, gracilaria vegetable usually need make a round trip to move between two-layer, intensity of labour greatly increased; therefore, the device extends to the second floor of the workshop by using the connecting rod, workers can open and close the first valve and the second valve at the second floor of the workshop, namely discharge of alkali liquor and clear water is controlled, whether the alkali liquor and the clear water are completely discharged is observed, running of the workers is avoided, and labor intensity is greatly reduced; the gracilaria can be discharged and conveyed to the cooking pool by one layer of operation in the workshop, whether the gracilaria is discharged can be checked through the observation pipe arranged on the switch valve, the gracilaria does not need to run to the two layers in the workshop to be checked from the top of the soaking pool, the working strength is effectively reduced, meanwhile, the clear water and the alkali liquor after soaking are primarily filtered through the alkali liquor pool and the water discharging pool respectively and then are recycled through being fed into the soaking pool, the water and the alkali liquor are saved, and the production cost is reduced.

Drawings

FIG. 1 is a schematic structural view of a transportation cycle system for soaking, steaming and cooking Gracilaria verrucosa.

FIG. 2 is a schematic view of the connection of the discharge switch to the steeping cistern.

Fig. 3 is a schematic diagram of the discharge switch.

FIG. 4 is another schematic view of a discharge switch.

Fig. 5 is a schematic view of the connection of the valve and the connecting rod.

Fig. 6 is a partially enlarged schematic view of fig. 5.

Fig. 7 is a schematic structural diagram of the first valve and the second valve.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

Referring to fig. 1 to 7, the utility model provides a gracilaria verrucosa soaking, cooking and transporting circulation system, comprising a production workshop 11 and a pneumatic diaphragm pump 9, wherein a soaking pool 1 and a cooking pool 2 are installed in the production workshop 11, the upper parts of the soaking pool 1 and the cooking pool 2 are located on the second layer of the production workshop 11, the lower parts of the soaking pool 1 and the cooking pool 2 are located on the first layer of the production workshop 11, and the bottom of the soaking pool 1 is provided with a water outlet, an alkali liquor outlet and a material outlet; the water outlet is connected with a clean water tank 5, the alkali liquor outlet is connected with an alkali liquor tank 4, filter grids 13 are arranged in the clean water tank 5 and the alkali liquor tank 4, a first water pump 15 and a second water pump 8 are respectively arranged in the clean water tank 5 and the alkali liquor tank 4, outlet ends of the first water pump 15 and the second water pump 8 are respectively connected with a first pipeline 7 and a second pipeline 6, and outlet ends of the first pipeline 7 and the second pipeline 6 are positioned at a tank opening at the upper end of the soaking tank 1; a discharge switch 3 is installed at the discharge opening, the discharge switch 3 is connected with a conveying pipeline 10, the conveying pipeline 10 is connected with a pneumatic diaphragm pump 9, and the outlet end of the conveying pipeline 10 is located at the tank opening at the upper end of the cooking tank 2.

Referring to fig. 5 to 7, in an embodiment of the present invention, the water outlet is connected to a first water discharge pipe 16, the alkaline solution discharge port is connected to a second water discharge pipe 17, a first valve 14 is disposed in the first water discharge pipe 16, and a second valve 12 is disposed in the second water discharge pipe 17; the first valve 14 comprises a first valve body 1421, a first valve core 1422, a valve rod 1424 and a return spring 1423, the valve rod 1424 of the first valve 14 is connected with a first connecting rod 144, a first hanging rack 146 is arranged on the outer wall of the top of the soaking pool, a first handle 145 is hinged on the first hanging rack 146, and the tail end of the first handle 145 is hinged with the first connecting rod 144; the structure of the second valve 12 is the same as that of the first valve 14, a second connecting rod 124 is connected to a valve stem 1424 of the second valve 12, a second hanger 126 is arranged on the outer wall of the top of the soaking pool, a second handle 125 is hinged to the second hanger 126, and the end of the second handle 125 is hinged to the second connecting rod 124; the first water discharge pipe 16 is connected with the clean water tank 5, and the second water discharge pipe 17 is connected with the alkali liquor tank 4.

Referring to fig. 5 to 7, in an embodiment of the present invention, two T-shaped chutes 18 are formed on an outer side wall of the top of the steeping vat, sliders 19 are respectively installed in the two T-shaped chutes, a plurality of threaded holes 21 are formed on side edges of left and right portions of the notches of the two T-shaped chutes 18 at equal intervals from top to bottom, a limiting ring 20 is disposed on a front surface of the slider 19, a terminal of the first handle 145 penetrates into one of the limiting rings 20, and a terminal of the second handle 125 penetrates into the other limiting ring 20; when the valve needs to be opened continuously, the bolt is screwed into the threaded hole 6 to fix the sliding block 19, so that the rotation of the handle is limited, the valve core 122 of the valve is not reset, and the valve is kept opened continuously.

Referring to fig. 5 to 6, in an embodiment of the present invention, the first sleeve 143 and the second sleeve 123 are respectively sleeved on the outer walls of the first connecting rod 144 and the second connecting rod 124; the first sleeve and the second sleeve are fixed on a laminate of a second floor of a workshop, so that the connecting rod can stretch up and down conveniently to drive the first valve core 122 to move, and the valve can be opened and closed.

In an embodiment of the present invention, the discharging switch 3 includes a right-angle two-way switch valve body 32, one end is a feeding port and is butted with the discharging port, and the other end is a discharging port; a telescopic cylinder mounting rack 33 is arranged on the outer side wall, opposite to the feed inlet, of the switch valve body 32, which is butted with the discharge outlet, a telescopic cylinder 34 is mounted on the telescopic cylinder mounting rack 33, and a push rod of the telescopic cylinder 34 penetrates into the switch valve body 32; the head of the push rod of the telescopic cylinder 34 is connected with a second valve core 39 which is matched with the feed port to seal the feed port to prevent liquid leakage.

Referring to fig. 1 to 4, in an embodiment of the present invention, the telescopic cylinder mounting frame 33 includes a first fixing flange 311, a first connecting flange 312 and two C-shaped steel plates 331, the first fixing flange 311 is fixed on an outer sidewall of the switch valve body 32 opposite to the feed inlet, the first connecting flange 312 is fixedly connected to the first fixing flange 311, the two C-shaped steel plates 331 are symmetrically installed on the first connecting flange 312, and a front end of a cylinder body of the telescopic cylinder 34 is fixed on the first connecting flange 312 and located between the two C-shaped steel plates 331; a top rod 314 is connected between the tail parts of the two C-shaped steel plates 331, a bolt 313 horizontally penetrates through the top rod 314, and the front end of the bolt 313 props up the tail end of a push rod of the telescopic cylinder 34; one end of the ejector rod 314 is hinged in a steel groove at the tail part of one of the C-shaped steel plates 331, the other end of the ejector rod 314 is fixed in a steel groove of the other C-shaped steel plate 331 through a bolt, and the other end of the ejector rod is fixed in a steel groove of the other C-shaped steel plate through a bolt, so that the ejector rod can be fixed.

Referring to fig. 1 to 4, in an embodiment of the present invention, a discharge port of the switch valve body 32 is connected to a transparent observation tube 35, the observation tube 35 is connected to the discharge port of the switch valve body 32 through a second connecting flange 37, and the other end of the observation tube 35 is connected to the conveying pipeline 10 through a third connecting flange 38; is used for conveying the soaked gracilaria verrucosa.

Referring to fig. 2, in an embodiment of the present invention, the cross section of the second valve core 39 is identical to the cross section and area of the feed inlet of the switch valve body 32, and the side wall in the switch valve body 32 is provided with a guide chute of the second valve core 39, so that the second valve core slides smoothly.

Referring to fig. 1 to 4, in an embodiment of the present invention, the switch valve body 2 is provided with a telescopic cylinder control switch 15, preferably, the telescopic cylinder 4 used in the present invention is a bidirectional telescopic cylinder, and it should be noted that how the telescopic cylinder control switch is specifically connected to control the movement of the telescopic cylinder and how the pneumatic diaphragm pump is controlled and used is the prior art, and here, only the function of the description is taken and the protection requirement is not met.

The utility model discloses the theory of operation below has:

after the fresh water is used for soaking, when the fresh water needs to be discharged and the alkaline soaking solution needs to be added, the first handle is pulled to drive the first valve to be opened (the first handle drives the corresponding sliding block to move downwards along the sliding groove, the screw hole at the corresponding position of the sliding block is locked with the screw, the sliding block is fixed, so that the first handle is fixed, the situation that the valve is opened when the handle is pulled all the time by hands is avoided), the fresh water is discharged from the first water discharge pipe, is simply filtered through the filter grid and then is introduced into the fresh water tank for storage, and workers can do other things in the period; after the clean water is drained, the first valve is closed (the screw for fixing the sliding block is screwed out, the first handle can move freely, the return spring of the first valve drives the valve core to return), alkaline soak solution is injected, when the alkaline soak solution needs to be drained after soaking, the second handle is pulled to drive the second valve to open (the second handle drives the corresponding sliding block to move downwards along the sliding groove, the screw is locked in the threaded hole at the corresponding position of the sliding block, the sliding block is fixed, the first handle is fixed, the situation that the valve is opened when the handle is pulled by a hand all the time is avoided), and the valve is simply filtered through the filter grid and then is introduced into an alkaline solution pool for storage; and closing the second valve after the discharging is finished. When new gracilaria verrucosa needs to be soaked, a first water pump is turned on to extract water in the clean water tank and introduce the water into the soaking tank, and when alkali liquor needs to be soaked, a second water pump is turned on to extract a second water pump in the alkali liquor tank and introduce the water into the soaking tank to soak the gracilaria verrucosa; it should be noted that both the clear water and the alkaline solution can be recycled only once, i.e. the same alkaline solution and the clear water can be soaked only twice, and then the water should be completely discharged, and new clear water and alkaline solution are introduced to soak the Gracilaria verrucosa.

When the discharging port needs to be opened to discharge the soaked gracilaria, the plug pin on the mounting frame of the telescopic cylinder is pulled out, the control button of the telescopic cylinder is pressed at the same time, the push rod of the telescopic cylinder is pushed backwards, so that the valve core is driven to move towards the side wall direction, the discharging switch is opened, the switch valve body is opened to be communicated with the transmission pipeline of the gracilaria, the push rod rotates around the hinged point under the thrust of the push rod, and the backward pushing movement of the push rod is not hindered; whether the gracilaria is discharged can be seen through the transparent observation tube, so that workers can see the discharging process of the gracilaria; the gracilaria verrucosa discharged from the soaking pool is pumped into the cooking pool by the pneumatic diaphragm pump through the conveying pipeline.

When the valve needs to be closed, the telescopic cylinder control button 315 is pressed again; the push rod of the telescopic cylinder is pushed forwards to drive the valve core to move forwards to block the feed inlet to complete the closing of the discharge switch, and in order to prevent the problem that the push rod of the telescopic cylinder cannot support the valve core due to air pressure, a bolt is arranged on the ejector rod, one end, which is not hinged, of the ejector rod is fixed in a steel groove of the C-shaped steel plate through a bolt, and the bolt can automatically support the push rod of the telescopic cylinder; the soak solution of the unsealed part of the valve core and the feed inlet is prevented from leaking out when the push rod is pushed backwards.

The above description is only for the preferred embodiment of the present invention, and should not be interpreted as limiting the scope of the present invention, which is intended to cover all the equivalent changes and modifications made in accordance with the claims of the present invention.

Claims

1. Gracilaria verrucosa soaking, cooking and transporting circulation system, which comprises a production workshop and a pneumatic diaphragm pump, and is characterized in that: a soaking pool and a cooking pool are installed in the production workshop, the lower parts of the soaking pool and the cooking pool are positioned on a second layer of the production workshop, the upper parts of the soaking pool and the cooking pool are positioned on a first layer of the production workshop, and a water outlet, an alkali liquor discharging port and a material discharging port are formed in the bottom of the soaking pool; the water outlet is connected with a clean water tank, the alkali liquor outlet is connected with an alkali liquor tank, filter grids are arranged in the clean water tank and the alkali liquor tank respectively, a first water pump and a second water pump are arranged in the clean water tank and the alkali liquor tank respectively, outlet ends of the first water pump and the second water pump are connected with a first pipeline and a second pipeline respectively, and outlet ends of the first pipeline and the second pipeline are located at a tank opening at the upper end of the soaking tank; the discharging opening is provided with a discharging switch, the discharging switch is connected with a conveying pipeline, the conveying pipeline is connected with the pneumatic diaphragm pump, and the outlet end of the conveying pipeline is located at the tank opening at the upper end of the cooking tank.

2. The system of claim 1, wherein the gracilaria verrucosa soaking, steaming, transporting and circulating system comprises: the water outlet is connected with a first water discharge pipe, the alkaline liquor discharge port is connected with a second water discharge pipe, a first valve is arranged in the first water discharge pipe, and a second valve is arranged in the second water discharge pipe; the first valve comprises a first valve body, a first valve core, a valve rod and a return spring, the valve rod of the first valve is connected with a first connecting rod, a first hanging frame is arranged on the outer wall of the top of the soaking pool, a first handle is hinged to the first hanging frame, and the tail end of the first handle is hinged to the first connecting rod; the structure of the second valve is the same as that of the first valve, a valve rod of the second valve is connected with a second connecting rod, a second hanging frame is arranged on the outer wall of the top of the soaking pool, a second handle is hinged to the second hanging frame, and the tail end of the second handle is hinged to the second connecting rod; the first water drainage pipe is connected with the clean water tank, and the second water drainage pipe is connected with the alkali liquor tank.

3. The system of claim 2, wherein the gracilaria verrucosa soaking, steaming, transporting and circulating system comprises: the outer side wall of the top of the soaking pool is provided with two T-shaped sliding grooves, two sliding blocks are installed in the T-shaped sliding grooves, a plurality of threaded holes are formed in the side edges of the left portion and the right portion of the notch of the T-shaped sliding grooves at equal intervals from top to bottom, the front surface of each sliding block is provided with a limiting ring, the tail end of a first handle penetrates into one limiting ring, and the tail end of a second handle penetrates into the other limiting ring.

4. The system of claim 2, wherein the gracilaria verrucosa soaking, steaming, transporting and circulating system comprises: the outer walls of the first connecting rod and the second connecting rod are respectively sleeved with a first sleeve and a second sleeve.

5. The system of claim 1, wherein the gracilaria verrucosa soaking, steaming, transporting and circulating system comprises: the discharge switch comprises a right-angle two-way switch valve body, one end of the switch valve body is a feed port which is in butt joint with the discharge port, and the other end of the switch valve body is a discharge port; a telescopic cylinder mounting frame is arranged on the outer side wall of the switch valve body, which is opposite to the feed inlet in butt joint with the discharge outlet, a telescopic cylinder is mounted on the telescopic cylinder mounting frame, and a push rod of the telescopic cylinder penetrates into the switch valve body; the head of the push rod of the telescopic cylinder is connected with a second valve core which is matched with the feed port.

6. The system of claim 5, wherein the gracilaria verrucosa soaking, steaming, transporting and circulating system comprises: the telescopic cylinder mounting frame comprises a first fixing flange, a first connecting flange and two C-shaped steel plates, the first fixing flange is fixed on the outer side wall of the switch valve body opposite to the feed inlet, the first connecting flange is fixedly connected with the first fixing flange, the two C-shaped steel plates are symmetrically mounted on the first connecting flange, and the front end of the telescopic cylinder body is fixed on the first connecting flange and is positioned between the two C-shaped steel plates; a top rod is connected between the tail parts of the two C-shaped steel plates, a bolt horizontally penetrates through the top rod, and the front end of the bolt props against the tail end of the telescopic cylinder push rod; one end of the ejector rod is hinged in the steel groove at the tail part of one C-shaped steel plate, and the other end of the ejector rod is fixed in the steel groove of the other C-shaped steel plate through a bolt.

7. The system of claim 5, wherein the gracilaria verrucosa soaking, steaming, transporting and circulating system comprises: the discharge gate of switch valve body is connected with transparent observation pipe, the observation pipe pass through the second flange with switch valve body's discharge gate is connected, the other end of observation pipe passes through the third flange and connects pipeline.

8. The system of claim 5, wherein the gracilaria verrucosa soaking, steaming, transporting and circulating system comprises: the cross section of the second valve core is identical to the cross section shape and area of the feed port of the switch valve body, and a guide sliding groove of the second valve core is arranged on the side wall in the switch valve body.